US11746093B2 - Nitrogen-containing compound, electronic element, and electronic device - Google Patents
Nitrogen-containing compound, electronic element, and electronic device Download PDFInfo
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- US11746093B2 US11746093B2 US18/010,241 US202118010241A US11746093B2 US 11746093 B2 US11746093 B2 US 11746093B2 US 202118010241 A US202118010241 A US 202118010241A US 11746093 B2 US11746093 B2 US 11746093B2
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- -1 Nitrogen-containing compound Chemical class 0.000 title claims abstract description 117
- 125000004093 cyano group Chemical group *C#N 0.000 claims abstract description 63
- 150000001875 compounds Chemical class 0.000 claims description 156
- 239000010410 layer Substances 0.000 claims description 82
- 125000001424 substituent group Chemical group 0.000 claims description 81
- 238000006243 chemical reaction Methods 0.000 claims description 49
- 229910052805 deuterium Inorganic materials 0.000 claims description 26
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 25
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 claims description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims description 20
- 239000002346 layers by function Substances 0.000 claims description 14
- 125000001624 naphthyl group Chemical group 0.000 claims description 14
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 13
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 13
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 13
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 13
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 11
- 239000011737 fluorine Substances 0.000 claims description 11
- 229910052731 fluorine Inorganic materials 0.000 claims description 11
- 150000002431 hydrogen Chemical class 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 10
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000460 chlorine Substances 0.000 claims description 6
- 229910052801 chlorine Inorganic materials 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 claims description 4
- 125000004653 anthracenylene group Chemical group 0.000 claims description 2
- 125000002529 biphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C12)* 0.000 claims description 2
- 125000005566 carbazolylene group Chemical group 0.000 claims description 2
- 125000004957 naphthylene group Chemical group 0.000 claims description 2
- 239000011368 organic material Substances 0.000 abstract description 10
- 125000005647 linker group Chemical group 0.000 abstract description 6
- 125000004432 carbon atom Chemical group C* 0.000 description 181
- 125000003118 aryl group Chemical group 0.000 description 90
- 125000001072 heteroaryl group Chemical group 0.000 description 60
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 48
- 238000012360 testing method Methods 0.000 description 42
- 239000000463 material Substances 0.000 description 40
- 125000000217 alkyl group Chemical group 0.000 description 36
- 238000002360 preparation method Methods 0.000 description 36
- 125000000753 cycloalkyl group Chemical group 0.000 description 29
- 239000000543 intermediate Substances 0.000 description 28
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 26
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 26
- 125000005073 adamantyl group Chemical group C12(CC3CC(CC(C1)C3)C2)* 0.000 description 25
- 238000004020 luminiscence type Methods 0.000 description 23
- 239000007787 solid Substances 0.000 description 23
- 239000000243 solution Substances 0.000 description 23
- 239000012043 crude product Substances 0.000 description 22
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 20
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 18
- 125000003545 alkoxy group Chemical group 0.000 description 17
- 239000012074 organic phase Substances 0.000 description 17
- 125000005843 halogen group Chemical group 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 15
- 125000001188 haloalkyl group Chemical group 0.000 description 15
- 125000004414 alkyl thio group Chemical group 0.000 description 14
- 238000000132 electrospray ionisation Methods 0.000 description 14
- 230000005525 hole transport Effects 0.000 description 14
- 238000002347 injection Methods 0.000 description 14
- 239000007924 injection Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 14
- 238000001819 mass spectrum Methods 0.000 description 14
- 125000001931 aliphatic group Chemical group 0.000 description 13
- 125000004429 atom Chemical group 0.000 description 13
- 125000000392 cycloalkenyl group Chemical group 0.000 description 13
- 238000000034 method Methods 0.000 description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 12
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 description 12
- 229910052799 carbon Inorganic materials 0.000 description 12
- 125000004988 dibenzothienyl group Chemical group C1(=CC=CC=2SC3=C(C21)C=CC=C3)* 0.000 description 12
- 150000002500 ions Chemical class 0.000 description 12
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 12
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 12
- 238000010898 silica gel chromatography Methods 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 11
- 239000012044 organic layer Substances 0.000 description 11
- 125000004076 pyridyl group Chemical group 0.000 description 11
- 238000003786 synthesis reaction Methods 0.000 description 11
- 125000003342 alkenyl group Chemical group 0.000 description 10
- 235000010290 biphenyl Nutrition 0.000 description 10
- 239000004305 biphenyl Substances 0.000 description 10
- 125000004122 cyclic group Chemical group 0.000 description 10
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 10
- 238000010992 reflux Methods 0.000 description 10
- 125000005103 alkyl silyl group Chemical group 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 9
- 239000008367 deionised water Substances 0.000 description 9
- 229910021641 deionized water Inorganic materials 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 239000012299 nitrogen atmosphere Substances 0.000 description 9
- 239000002994 raw material Substances 0.000 description 9
- 125000003107 substituted aryl group Chemical group 0.000 description 9
- 125000000732 arylene group Chemical group 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 125000005549 heteroarylene group Chemical group 0.000 description 8
- 125000005956 isoquinolyl group Chemical group 0.000 description 8
- 125000005493 quinolyl group Chemical group 0.000 description 8
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 8
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 8
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 7
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 7
- 125000000714 pyrimidinyl group Chemical group 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 125000004104 aryloxy group Chemical group 0.000 description 6
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 6
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 6
- YMWUJEATGCHHMB-DICFDUPASA-N dichloromethane-d2 Chemical compound [2H]C([2H])(Cl)Cl YMWUJEATGCHHMB-DICFDUPASA-N 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 125000000592 heterocycloalkyl group Chemical group 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 229910000027 potassium carbonate Inorganic materials 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 229910052717 sulfur Inorganic materials 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 125000005104 aryl silyl group Chemical group 0.000 description 5
- 125000005110 aryl thio group Chemical group 0.000 description 5
- 239000011259 mixed solution Substances 0.000 description 5
- 125000005561 phenanthryl group Chemical group 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 description 5
- DIVZFUBWFAOMCW-UHFFFAOYSA-N 4-n-(3-methylphenyl)-1-n,1-n-bis[4-(n-(3-methylphenyl)anilino)phenyl]-4-n-phenylbenzene-1,4-diamine Chemical compound CC1=CC=CC(N(C=2C=CC=CC=2)C=2C=CC(=CC=2)N(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C=C(C)C=CC=2)=C1 DIVZFUBWFAOMCW-UHFFFAOYSA-N 0.000 description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 4
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 4
- 238000005481 NMR spectroscopy Methods 0.000 description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 4
- QARVLSVVCXYDNA-UHFFFAOYSA-N bromobenzene Chemical compound BrC1=CC=CC=C1 QARVLSVVCXYDNA-UHFFFAOYSA-N 0.000 description 4
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- 239000011630 iodine Substances 0.000 description 4
- 229910052740 iodine Inorganic materials 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 4
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 4
- 125000006413 ring segment Chemical group 0.000 description 4
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 125000003003 spiro group Chemical group 0.000 description 4
- WJKHJLXJJJATHN-UHFFFAOYSA-N triflic anhydride Chemical compound FC(F)(F)S(=O)(=O)OS(=O)(=O)C(F)(F)F WJKHJLXJJJATHN-UHFFFAOYSA-N 0.000 description 4
- SZUVGFMDDVSKSI-WIFOCOSTSA-N (1s,2s,3s,5r)-1-(carboxymethyl)-3,5-bis[(4-phenoxyphenyl)methyl-propylcarbamoyl]cyclopentane-1,2-dicarboxylic acid Chemical compound O=C([C@@H]1[C@@H]([C@](CC(O)=O)([C@H](C(=O)N(CCC)CC=2C=CC(OC=3C=CC=CC=3)=CC=2)C1)C(O)=O)C(O)=O)N(CCC)CC(C=C1)=CC=C1OC1=CC=CC=C1 SZUVGFMDDVSKSI-WIFOCOSTSA-N 0.000 description 3
- YQOLEILXOBUDMU-KRWDZBQOSA-N (4R)-5-[(6-bromo-3-methyl-2-pyrrolidin-1-ylquinoline-4-carbonyl)amino]-4-(2-chlorophenyl)pentanoic acid Chemical compound CC1=C(C2=C(C=CC(=C2)Br)N=C1N3CCCC3)C(=O)NC[C@H](CCC(=O)O)C4=CC=CC=C4Cl YQOLEILXOBUDMU-KRWDZBQOSA-N 0.000 description 3
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 3
- 238000005160 1H NMR spectroscopy Methods 0.000 description 3
- WYFCZWSWFGJODV-MIANJLSGSA-N 4-[[(1s)-2-[(e)-3-[3-chloro-2-fluoro-6-(tetrazol-1-yl)phenyl]prop-2-enoyl]-5-(4-methyl-2-oxopiperazin-1-yl)-3,4-dihydro-1h-isoquinoline-1-carbonyl]amino]benzoic acid Chemical compound O=C1CN(C)CCN1C1=CC=CC2=C1CCN(C(=O)\C=C\C=1C(=CC=C(Cl)C=1F)N1N=NN=C1)[C@@H]2C(=O)NC1=CC=C(C(O)=O)C=C1 WYFCZWSWFGJODV-MIANJLSGSA-N 0.000 description 3
- AWXGSYPUMWKTBR-UHFFFAOYSA-N 4-carbazol-9-yl-n,n-bis(4-carbazol-9-ylphenyl)aniline Chemical compound C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(N(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 AWXGSYPUMWKTBR-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 101000837344 Homo sapiens T-cell leukemia translocation-altered gene protein Proteins 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 102100028692 T-cell leukemia translocation-altered gene protein Human genes 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 125000005428 anthryl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C(*)=C([H])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 3
- 125000003785 benzimidazolyl group Chemical group N1=C(NC2=C1C=CC=C2)* 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229940126543 compound 14 Drugs 0.000 description 3
- 229940125844 compound 46 Drugs 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 125000005842 heteroatom Chemical group 0.000 description 3
- 125000004366 heterocycloalkenyl group Chemical group 0.000 description 3
- 238000004128 high performance liquid chromatography Methods 0.000 description 3
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 125000002950 monocyclic group Chemical group 0.000 description 3
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 125000004625 phenanthrolinyl group Chemical group N1=C(C=CC2=CC=C3C=CC=NC3=C12)* 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 125000004665 trialkylsilyl group Chemical group 0.000 description 3
- CAYQIZIAYYNFCS-UHFFFAOYSA-N (4-chlorophenyl)boronic acid Chemical compound OB(O)C1=CC=C(Cl)C=C1 CAYQIZIAYYNFCS-UHFFFAOYSA-N 0.000 description 2
- AMEVJOWOWQPPJQ-UHFFFAOYSA-N 2,4-dichloro-6-phenyl-1,3,5-triazine Chemical compound ClC1=NC(Cl)=NC(C=2C=CC=CC=2)=N1 AMEVJOWOWQPPJQ-UHFFFAOYSA-N 0.000 description 2
- DDGPPAMADXTGTN-UHFFFAOYSA-N 2-chloro-4,6-diphenyl-1,3,5-triazine Chemical compound N=1C(Cl)=NC(C=2C=CC=CC=2)=NC=1C1=CC=CC=C1 DDGPPAMADXTGTN-UHFFFAOYSA-N 0.000 description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- HQSCPPCMBMFJJN-UHFFFAOYSA-N 4-bromobenzonitrile Chemical compound BrC1=CC=C(C#N)C=C1 HQSCPPCMBMFJJN-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- ROFVEXUMMXZLPA-UHFFFAOYSA-N Bipyridyl Chemical group N1=CC=CC=C1C1=CC=CC=N1 ROFVEXUMMXZLPA-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- QOVYHDHLFPKQQG-NDEPHWFRSA-N N[C@@H](CCC(=O)N1CCC(CC1)NC1=C2C=CC=CC2=NC(NCC2=CN(CCCNCCCNC3CCCCC3)N=N2)=N1)C(O)=O Chemical compound N[C@@H](CCC(=O)N1CCC(CC1)NC1=C2C=CC=CC2=NC(NCC2=CN(CCCNCCCNC3CCCCC3)N=N2)=N1)C(O)=O QOVYHDHLFPKQQG-NDEPHWFRSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 2
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Definitions
- the present disclosure relates to the technical field of organic materials, in particular to a nitrogen-containing compound, an electronic element and an electronic device.
- organic electroluminescent device As a new generation of display technology, organic electroluminescent device (OLED) have the advantages of ultra-thinness, self-luminescence, wide viewing angle, fast response, high luminous efficiency, good temperature adaptability, simple production process, low driving voltage, low energy consumption, and the like, and have been widely used in industries such as flat panel displays, flexible displays, solid state lighting, and vehicle displays.
- OLED organic electroluminescent device
- An organic luminescence phenomenon refers to a phenomenon in which an organic material is used to convert an electric energy into a luminous energy.
- An organic luminescence device using the organic luminescence phenomenon generally has a structure including an anode, a cathode, and an organic material layer between the anode and the cathode.
- an organic luminescence device structure when a voltage is applied between the anode and the cathode, holes and electrons are injected into the organic material layer from the anode and the cathode respectively, excitons are formed when the injected holes and electrons meet, and light is emitted when these excitons return to a ground state.
- the present disclosure aims to provide a nitrogen-containing compound, an electronic element and an electronic device to improve the performance of the electronic element and the electronic device.
- a nitrogen-containing compound having a structure as shown in a formula 1:
- X 1 , X 2 , and X 3 are the same or different, and are each independently selected from C(R 0 ) or N, and at least one of X 1 , X 2 , and X 3 is N;
- L 1 , L 2 , and L 3 are the same as or different from each other, and are each independently a single bond, substituted or unsubstituted arylene with 6 to 30 carbon atoms, or substituted or unsubstituted heteroarylene with 3 to 30 carbon atoms;
- Ar 1 , Ar 2 , and Ar 3 are the same as or different from each other, and are each independently selected from substituted or unsubstituted aryl with 6 to 30 carbon atoms, and substituted or unsubstituted heteroaryl with 3 to 30 carbon atoms;
- Ad is 1-adamantyl
- m 1 to m 3 is represented by m i
- n 1 to n 3 is represented by n i
- q 1 to q 3 is represented by q i
- t 1 to t 3 is represented by t i
- i is a variable, and is selected from 1, 2 or 3;
- m i represents the number of cyano on L i
- n i represents the number of Ad on L i
- q i represents the number of cyano on Ar i
- t i represents the number of Ad on Ar i ;
- n i is independently selected from 0, 1, 2 or 3, and when m i is greater than 1, any two m 1 are the same or different;
- n i is independently selected from 0, 1, 2 or 3, and when n i is greater than 1, any two n 1 are the same or different;
- q i is independently selected from 0, 1, 2 or 3, and when q i is greater than 1, any two q 1 are the same or different;
- t i is independently selected from 0, 1, 2 or 3, and when t i is greater than 1, any two t i are the same or different;
- each R 0 is the same as or different from each other, and is independently selected from hydrogen, deuterium, alkyl with 1 to 10 carbon atoms, substituted or unsubstituted heteroaryl with 3 to 20 carbon atoms, or substituted or unsubstituted aryl with 6 to 20 carbon atoms; and
- substituents in R 0 , L 1 to L 3 and Ar 1 to Ar 3 are the same or different, and are each independently selected from deuterium, a halogen group, cyano, a group A, alkyl with 1 to 10 carbon atoms, haloalkyl with 1 to 10 carbon atoms, alkenyl with 2 to 10 carbon atoms, cycloalkyl with 3 to 10 carbon atoms, heterocycloalkyl with 2 to 10 carbon atoms, cycloalkenyl with 5 to 10 carbon atoms, heterocycloalkenyl with 4 to 10 carbon atoms, alkoxy with 1 to 10 carbon atoms, alkylthio with 1 to 10 carbon atoms, aryloxy with 6 to 18 carbon atoms, arylthio with 6 to 18 carbon atoms, arylsilyl with 6 to 18 carbon atoms, or alkylsilyl with 3 to 12 carbon atoms; the group A is selected from substituted or unsubstituted hetero
- nitrogen-containing heteroaryl is used as a core structure, adamantyl and a cyano group are connected on the nitrogen-containing heteroaryl core structure by using aryl or heteroaryl as a linking group, and the presence of cyano makes this part of the structure have a large dipole moment, thus improving the polarity of the material.
- Cyano and a heteroaryl group are combined, so that organic materials with a high electron mobility can be obtained.
- adamantyl itself can avoid the stacking of conjugated planes to form ⁇ aggregation, so that the film-forming properties of the material can be improved, the molecular weight and asymmetry of the compound are simultaneously enhanced at the same time, the thermal stability of the molecule is improved, the crystallinity of the material is also improved to a certain extent, and the stability of the compound can be improved when the compound is used in the electronic element, making the electronic element easier to be mass-production.
- an electronic element including an anode and a cathode which are oppositely disposed, and a functional layer disposed between the anode and the cathode; and the functional layer includes the nitrogen-containing compound described above.
- an electronic device including the electronic element described above.
- FIG. 1 is a structural schematic diagram of an organic electroluminescent device according to a embodiment of the present disclosure.
- FIG. 2 is a structural schematic diagram of a photoelectric conversion device according to a embodiment of the present disclosure.
- FIG. 3 is a structural schematic diagram of an electronic device according to one embodiment of the present disclosure.
- FIG. 4 is a structural schematic diagram of an electronic device according to another embodiment of the present disclosure.
- anode 100 , anode; 200 , cathode; 300 , functional layer; 310 , hole injection layer; 320 , hole transport layer; 322 , electron blocking layer; 330 , organic luminescence layer; 340 , electron transport layer; 341 , hole blocking layer; 350 , electron injection layer; 360 , photoelectric conversion layer; 400 , first electronic device; and 500 , second electronic device.
- a nitrogen-containing compound in the embodiments of the present disclosure has a structural formula as shown in a formula 1:
- X 1 , X 2 , and X 3 are the same or different, and are each independently selected from C(R 0 ) or N, and at least one of X 1 , X 2 , and X 3 is N;
- L 1 , L 2 , and L 3 are the same as or different from each other, and are each independently a single bond, substituted or unsubstituted arylene with 6 to 30 carbon atoms, or substituted or unsubstituted heteroarylene with 3 to 30 carbon atoms;
- Ar 1 , Ar 2 , and Ar 3 are the same as or different from each other, and are each independently selected from substituted or unsubstituted aryl with 6 to 30 carbon atoms, or substituted or unsubstituted heteroaryl with 3 to 30 carbon atoms;
- Ad is 1-adamantyl
- m 1 to m 3 is represented by m i
- n 1 to n 3 is represented by n i
- q 1 to q 3 is represented by q i
- t 1 to t 3 is represented by t i
- i is a variable, and is selected from 1, 2 or 3;
- m i represents the number of cyano on L i
- n i represents the number of Ad on L i
- q i represents the number of cyano on Ar i
- t i represents the number of Ad on Ar i ;
- m i is independently selected from 0, 1, 2 or 3, and when m i is greater than 1, any two m i are the same or different;
- n i is independently selected from 0, 1, 2 or 3, and when n i is greater than 1, any two n i are the same or different;
- q i is independently selected from 0, 1, 2 or 3, and when q i is greater than 1, any two q i are the same or different;
- t i is independently selected from 0, 1, 2 or 3, and when t 1 is greater than 1, any two t i are the same or different;
- each R 0 is the same as or different from each other, and is independently selected from hydrogen, deuterium, alkyl with 1 to 10 carbon atoms, substituted or unsubstituted heteroaryl with 3 to 20 carbon atoms, or substituted or unsubstituted aryl with 6 to 20 carbon atoms; and
- substituents in R 0 , L 1 to L 3 and Ar 1 to Ar 3 are the same or different, and are each independently selected from deuterium, a halogen group, cyano, a group A, alkyl with 1 to 10 carbon atoms, haloalkyl with 1 to 10 carbon atoms, alkenyl with 2 to 10 carbon atoms, cycloalkyl with 3 to 10 carbon atoms, heterocycloalkyl with 2 to 10 carbon atoms, cycloalkenyl with 5 to 10 carbon atoms, heterocycloalkenyl with 4 to 10 carbon atoms, alkoxy with 1 to 10 carbon atoms, alkylthio with 1 to 10 carbon atoms, aryloxy with 6 to 18 carbon atoms, arylthio with 6 to 18 carbon atoms, arylsilyl with 6 to 18 carbon atoms, or alkylsilyl with 3 to 12 carbon atoms; the group A is selected from substituted or unsubstituted hetero
- nitrogen-containing heteroaryl is used as a core structure, 1-adamantyl and a cyano group are connected on the nitrogen-containing heteroaryl core structure by a linking group, and the presence of cyano makes this part of the structure have a large dipole moment, thus improving the polarity of the material.
- Cyano and a heteroaryl group are combined, so that organic materials with a high electron mobility can be obtained.
- the nitrogen-containing compound is used as an electron transport layer of an electronic element, the efficiency and service life of a device can be improved, and the operating voltage can be reduced.
- adamantyl itself can avoid the direct stacking of conjugated planes to form ⁇ aggregation, so that the film-forming properties of the material can be improved, the molecular weight and asymmetry of the compounds are simultaneously enhanced at the same time, the thermal stability of the molecule is improved, the crystallinity of the material is also improved to a certain extent. Therefore, the stability of the compounds can be improved when applied to the electronic element, making the electronic element easier to be mass-production.
- connection type of 1-adamantyl compared with connection type of 2-adamantyl, connection type of 1-adamantyl has the advantages that the molecular polarity of the compounds can be improved, and the stability of the compounds is better.
- the number of carbon atoms when L 1 to L 3 , and Ar 1 to Ar 3 are selected from substituted aryl or substituted heteroaryl refers to the total number of carbon atoms of the aryl or heteroaryl and substituents on the aryl or heteroaryl.
- substituted aryl with 18 carbon atoms means that the total number of carbon atoms of the aryl and substituents is 18.
- Ar 1 is 9-methyl-9-phenyl-fluorenyl, it belongs to substituted aryl with 20 carbon atoms.
- Y 1 is
- cyano and adamantyl can be connected to either the aryl or heteroaryl or substituents of the aryl or heteroaryl.
- Ar 1 is selected from naphthyl substituted by phenyl, where cyano can be connected to either phenyl or naphthyl.
- L 1 to L 3 are substituted arylene or heteroarylene, cyano and adamantyl can be connected to either the arylene or heteroarylene or substituents of the arylene or heteroarylene.
- L 1 is selected from phenylene substituted by methyl, where cyano can be connected to either methyl or phenylene.
- Y 3 includes both cyano and adamantyl; and in other embodiments, Y 1 includes cyano, and Y 3 includes adamantyl.
- cyano and adamantyl may both be connected to L i or may both be connected to Ar i or one of cyano and adamantyl is connected to L i , and the other is connected to Ar i .
- L 1 is connected to one cyano in Y 1
- Ar 2 is connected to one adamantyl in Y 2 .
- the chemical formula 1 there is at least one cyano and one adamantyl.
- the plurality of cyano may be connected to the same Ar or the same L, or may be connected to different Ar or different L.
- a total of two cyano are included, where one cyano is connected to Ar 1 , and the other cyano is connected to Ar 2 .
- a total of two cyano are included, and both cyano are connected to Ar 1 .
- a total of two cyano are included, where one cyano is connected to L 1 , and the other cyano is connected to L 2 . In other embodiments, a total of two cyano are included, and both cyano are connected to L 1 .
- the plurality of adamantyl may be connected to the same Ar or the same L, or may be connected to different Ar or the same L.
- adamantyl is 1-adamantyl
- adamantyl is
- C(R 0 ) indicates that a group R 0 is connected to a carbon atom.
- hetero means that at least one heteroatom selected from B, N, O, S, Se, Si or P is included in one functional group.
- aralkoxy means alkoxy substituted with aryl
- alkoxycarbonyl means carbonyl substituted with alkoxy
- arylcarbonylalkenyl means alkenyl substituted with arylcarbonyl
- aryloxy means hydroxy substituted with aryl.
- aryl refers to an optional functional group or substituent derived from an aromatic carbocyclic ring.
- the aryl can be monocyclic aryl or polycyclic aryl.
- the aryl can be monocyclic aryl, fused aryl, two or more monocyclic aryl conjugatedly linked by carbon-carbon bonds, two or more monocyclic aryl and fused aryl which are conjugatedly linked by a carbon-carbon bond, and two or more fused aryl conjugatedly linked by carbon-carbon bonds.
- the fused aryl refers to two or more rings in which two carbon atoms in a ring system are shared by two adjacent rings, where at least one of the rings is aromatic, e.g., the other rings can be cycloalkyl, cycloalkenyl, or aryl.
- aryl in the present disclosure can include, but are not limited to, phenyl, naphthyl, anthryl, phenanthryl, biphenyl, terphenyl, tetraphenyl, pentaphenyl, benzo[9,10]phenanthryl, pyrenyl, benzofluoranthrenyl, chrysenyl, perylenyl, fluorenyl, triphenylene, naphthacenyl, triphenylenyl, and the like.
- fluorenyl may be substituted, and two substituents may be bonded to each other to form a spirocyclic structure. In the situation where the above fluorenyl is substituted, it may be:
- substituted aryl can be that one or two or more hydrogen atoms in the aryl are substituted by groups such as deuterium atom, a halogen group, cyano, aryl, heteroaryl, alkylsilyl, arylsilyl, alkyl, haloalkyl, cycloalkyl, alkoxy, alkylthio, and the like.
- groups such as deuterium atom, a halogen group, cyano, aryl, heteroaryl, alkylsilyl, arylsilyl, alkyl, haloalkyl, cycloalkyl, alkoxy, alkylthio, and the like.
- aryl substituted by heteroaryl include, but are not limited to, phenyl substituted by dibenzofuranyl, phenyl substituted by dibenzothienyl, phenyl substituted by carbazolyl, phenyl substituted by pyridyl, and the like.
- the number of carbon atoms of the substituted aryl refers to the total number of carbon atoms of the aryl and substituents on the aryl, for example substituted aryl with 18 carbon atoms means that the total number of carbon atoms of the aryl and substituents is 18.
- examples of aryl as a substituent may include, but are not limited to, phenyl, naphthyl, anthryl, phenanthryl, biphenyl, terphenyl, fluorenyl, dimethylfluorenyl, pyrenyl, and perylenyl.
- the number of carbon atoms of the aryl can be selected from 6, 10, 12, 13, 14, 15, 16, 17, 18, 20, 25, or 30.
- the aryl is aryl with 6 to 30 carbon atoms; in other embodiments, the aryl is aryl with 6 to 25 carbon atoms; in other embodiments, the aryl is aryl with 6 to 20 carbon atoms; in other embodiments, the aryl is aryl with 6 to 18 carbon atoms; in other embodiments, the aryl is aryl with 6 to 15 carbon atoms; in other embodiments, the aryl is aryl with 6 to 13 carbon atoms; and in other embodiments, the aryl is aryl with 6 to 12 carbon atoms.
- arylene is a divalent group, and in addition, the above description for aryl may apply to the arylene.
- heteroaryl refers to a monocyclic or polycyclic system that contains at least one heteroatom independently selected from O, N, P, Si, Se, B, or S in the ring, and at least one ring system is aromatic.
- Each ring system in the heteroaryl contains a ring composed of 5 to 7 ring atoms, and has one or more points of connection to the remaining part of a molecule.
- the heteroaryl may be monocyclic heteroaryl or polycyclic heteroaryl, in other words, the heteroaryl may be a single aromatic ring system or a plurality of aromatic ring systems conjugatedly linked via carbon-carbon bonds, and any one aromatic ring system is one aromatic monocyclic ring or one aromatic fused ring.
- Fused heteroaryl refers to two or more rings in which two atoms in a ring system are shared by two adjacent rings, where at least one of the rings is aromatic, e.g., the other rings may be cycloalkyl, heterocyclyl, cycloalkenyl, or aryl.
- heteroaryl may include thienyl, furyl, pyrrolyl, imidazolyl, thiazolyl, oxazolyl, isothiazolyl, oxadiazolyl, triazolyl, azolyl, furazanyl, pyridyl, bipyridyl, phenanthridinyl, pyrimidinyl, triazinyl, acridinyl, pyridazinyl, pyrazinyl, quinolyl, quinazolinyl, quinoxalinyl, phenoxazinyl, phthalazinyl, pyridopyrimidinyl, pyridopyrazinyl, pyrazinopyrazinyl, isoquinolyl, indolyl, carbazolyl, benzoxazolyl, benzimidazolyl, benzothiazolyl, benzocarbazolyl, benzothienyl, triazo
- Thienyl, furyl, phenanthrolinyl, etc. are heteroaryl of the single aromatic ring system, and N-arylcarbazolyl, and N-heteroarylcarbazolyl are heteroaryl of the plurality of aromatic ring systems conjugatedly linked via carbon-carbon bonds.
- substituted heteroaryl may be that one or two or more hydrogen atoms in the heteroaryl are substituted by groups such as deuterium atom, a halogen group, cyano, aryl, heteroaryl, trialkylsilyl, alkyl, cycloalkyl, alkoxy, alkylthio, and the like.
- groups such as deuterium atom, a halogen group, cyano, aryl, heteroaryl, trialkylsilyl, alkyl, cycloalkyl, alkoxy, alkylthio, and the like.
- aryl-substituted heteroaryl include, but are not limited to, dibenzofuranyl substituted by phenyl, dibenzothienyl substituted by phenyl, carbazolyl substituted by phenyl, pyridyl substituted by phenyl, and the like.
- the number of carbon atoms of the substituted heteroaryl refers to the total number of carbon atoms of the heteroaryl and substituents on the heteroaryl.
- substituted heteroaryl with 14 carbon atoms means that the total number of carbon atoms of the heteroaryl and substituents is 14.
- heteroaryl as a substituent may include, but are not limited to, dibenzothienyl, dibenzofuranyl, carbazolyl, N-phenylcarbazolyl, pyridyl, bipyridyl, pyrimidinyl, triazinyl, quinolyl, isoquinolyl, quinazolinyl, benzimidazolyl, indolyl, and phenanthrolinyl.
- the number of carbon atoms of the heteroaryl can be selected from 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30.
- the heteroaryl is heteroaryl with 3 to 12 carbon atoms, in other embodiments, the heteroaryl is heteroaryl with 3 to 15 carbon atoms, in other embodiments, the heteroaryl is heteroaryl with 5 to 12 carbon atoms, and in other embodiments, the heteroaryl is heteroaryl with 5 to 18 carbon atoms.
- heteroarylene is a divalent group, and in addition, the above description for heteroaryl may apply to the heteroarylene.
- the halogen group as a substituent may be fluorine, chlorine, bromine or iodine.
- alkyl includes saturated linear or branched, monovalent or multivalent alkyl with 1 to 10 carbon atoms, where the alkyl may be independently optionally substituted by one or more substituents described in the present disclosure.
- an alkyl group contains 1 to 10 carbon atoms; in other embodiments, the alkyl group contains 1 to 8 carbon atoms; in other embodiments, the alkyl group contains 1 to 6 carbon atoms; in other embodiments, the alkyl group contains 1 to 4 carbon atoms; and in other embodiments, the alkyl group contains 1 to 3 carbon atoms.
- alkyl groups with 1 to 4 carbon atoms as a substituent include, but are not limited to, methyl (Me, —CH 3 ), ethyl (Et, —CH 2 CH 3 ), n-propyl (n-Pr, —CH 2 CH 2 CH 3 ), isopropyl (i-Pr, —CH(CH 3 ) 2 ), n-butyl (n-Bu, —CH 2 CH 2 CH 2 CH 3 ), 2-methylpropyl or isobutyl (i-Bu, —CH 2 CH(CH 3 ) 2 ), 1-methylpropyl, sec-butyl (s-Bu, —CH(CH 3 )CH 2 CH 3 ), tert-butyl (t-Bu, —C(CH 3 ) 3 ), and the like.
- alkenyl refers to linear or branched, monovalent or multivalent hydrocarbyl containing 2 to 10 carbon atoms, with at least one site of unsaturation, i.e., one carbon-carbon sp 2 double bond, and the alkenyl group may be optionally substituted with one or more substituents as described in the present disclosure, including the positionings of “cis” and “trans”, or the positionings of “E” and “Z”. In some embodiments, the number of carbon atoms of the alkenyl is 2 to 6.
- the alkenyl includes vinyl, allyl, isopropenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 3-methyl-1-butenyl, 1,3-butadienyl, allyl, 1-phenylethen-1-yl, 2-phenylethen-1-yl, 2,2-stilben-1-yl, 2-phenyl-2-(naphthalen-1-yl)ethen-1-yl, 2,2-bis(diphen-1-yl)ethen-1-yl, styryl, and the like.
- alkoxy means that an alkyl group is connected to the remaining part of a molecule via an oxygen atom, where the alkyl group has the meaning as described in the present disclosure.
- alkoxy as a substituent include, but are not limited to, methoxy (MeO, —OCH 3 ), ethoxy (EtO, —OCH 2 CH 3 ), 1-propoxy (n-PrO, n-propoxy, —OCH 2 CH 2 CH 3 ), 2-propoxy (i-PrO, i-propoxy, —OCH(CH 3 ) 2 ), 1-butoxy (n-BuO, n-butoxy, —OCH 2 CH 2 CH 2 CH 3 ), 2-methyl-1-propoxy (i-BuO, i-butoxy, —OCH 2 CH(CH 3 ) 2 ), 2-butoxy (s-BuO, s-butoxy, —OCH(CH 3 )CH 2 CH 3 ), 2-methyl-2-propoxy (t-
- alkylthio means that an alkyl group is connected to the remaining part of a molecule via a sulfur atom, where the alkyl group has the meaning as described in the present disclosure.
- alkylthio groups as a substituent include, but are not limited to, methylthio (MeS, —SCH 3 ), ethylthio (EtS, —SCH 2 CH 3 ), 1-propylthio (n-PrS, n-propylthio, —SCH 2 CH 2 CH 3 ), 2-propylthio (i-PrS, i-propylthio, —SCH(CH 3 ) 2 ), and the like.
- alkylsilyl refers to
- R G1 , R G2 , and R G3 are each independently alkyl; and specific examples of alkylsilyl include, but are not limited to, trimethylsilyl, triethylsilyl, tert-butyldimethylsilyl, and propyldimethylsilyl; and
- arylsilyl refers to
- R G4 , R G5 , and R G6 are each independently aryl, and specific examples of arylsilyl include, but are not limited to, triphenylsilyl, diphenylsilyl, phenylsilyl, and the like, but are not limited to these.
- haloalkyl means that an alkyl group is substituted by one or more halogen atoms, where the alkyl group has the meaning as described in the present disclosure.
- haloalkyl with 1 to 4 carbon atoms includes fluorine-substituted alkyl with 1 to 4 carbon atoms, and such examples include, but are not limited to, trifluoromethyl, difluoromethyl, 1-fluoro-2-chloroethyl, and the like.
- cycloalkyl refers to a group obtained by removing a hydrogen atom from monocyclic or polycyclic saturated cyclic hydrocarbon, and “cycloalkyl” may have one or more points of connection to the remaining part of a molecule.
- the cycloalkyl is in a ring system containing 3 to 10 ring carbon atoms; in other embodiments, the cycloalkyl is cycloalkyl containing 5 to 10 ring carbon atoms; in other embodiments, the cycloalkyl is cycloalkyl containing 5 to 7 ring carbon atoms; and in other embodiments, the cycloalkyl is cycloalkyl containing 3 to 6 ring carbon atoms.
- the cycloalkyl group may be independently unsubstituted or substituted by one or more substituents described in the present disclosure.
- the cycloalkyl includes cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, norbornyl, adamantyl, and the like.
- cycloalkenyl refers to a group obtained by removing a hydrogen atom from monocyclic or polycyclic unsaturated cyclic olefin, and “cycloalkenyl” may have one or more points of connection to the remaining part of a molecule.
- the cycloalkenyl is cycloalkenyl containing 2 to 10 ring carbon atoms; and in other embodiments, the cycloalkenyl is cycloalkenyl containing 5 to 10 ring carbon atoms.
- the cycloalkenyl group may be independently unsubstituted or substituted with one or more substituents described in the present disclosure, for example cyclohexenyl.
- a “ring” in the present disclosure includes a saturated ring, i.e. cycloalkyl, and heterocycloalkyl; and an unsaturated ring, i.e. cycloalkenyl, heterocycloalkenyl, aryl and heteroaryl.
- n ring atoms form a ring system, i.e. a n-membered ring.
- phenyl is 6-membered aryl.
- a 5- to 10-membered aromatic ring refers to aryl or heteroaryl containing 5 to 10 ring atoms; and a 5- to 10-membered aliphatic ring refers to cycloalkyl or cycloalkenyl containing 5 to 10 ring atoms.
- “5- to 13-membered aliphatic rings” include, but are not limited to, cyclopentane, cyclohexane, cycloheptane, adamantane, camphorane, and the like; “5- to 10-membered aliphatic rings” include, but are not limited to, cyclopentane, cyclohexane, cycloheptane, and adamantane; a “5- to 6-membered aliphatic ring” is, for example cyclopentane or cyclohexane; and a “5- to 13-membered aromatic ring” in the present disclosure includes, but is not limited to, a pyrrole ring, furan, thiophene, benzene, naphthalene, pyridine, quinoline, quinoxaline, fluorene, and the like, where fluorene is a 13-membered aromatic ring.
- any two adjacent substituents on L 1 to L 3 and Ar 1 to Ar 3 form a ring, which means that two substituents connected to a same atom form spiro cycloalkyl, or substituents connected to adjacent atoms are connected to each other to form a fused aryl ring.
- any two adjacent substituents form a ring”, which means that the two adjacent substituents may but not have to form a ring, and this solution includes a circumstance where the two substituents are connected to each other to form a ring and a circumstance where the two substituents are present independently of each other.
- two adjacent substituents may be present to form a saturated or unsaturated ring, or may be present independently of each other.
- the formed ring is spiro-connected to the remaining part of a molecule. Where two adjacent substituents connected to adjacent atoms form a ring, the formed ring is fused to the remaining part of a molecule.
- An unpositioned connecting bond in the present disclosure refers to a single bond
- naphthyl represented by the formula (f) is connected to other positions of a molecule through two unpositioned connecting bonds penetrating a dicyclic ring, and its meaning includes any one possible connecting mode represented by formulae (f-1) to (f-10).
- phenanthryl represented by the formula (X′) is connected with other positions of a molecule through one unpositioned connecting bond extending from the center of a benzene ring on one side, and its meaning includes any possible connecting mode represented by formulae (X′-1) to (X′-4).
- An unpositioned substituent in the present disclosure refers to a substituent connected through a single bond extending from the center of a ring system, which means that the substituent can be connected to any possible position in the ring system.
- a substituent R represented by the formula (Y) is connected with a quinoline ring through one unpositioned connecting bond, and its meaning includes any one possible connecting mode represented by formulae (Y-1) to (Y-7).
- At least one of X 1 , X 2 , and X 3 in the compounds of the present disclosure is N.
- the meaning is that any one of X 1 , X 2 , and X 3 may be N, and the other two are optionally selected from C(R 0 ) or N.
- At least two of X 1 , X 2 , and X 3 in the compounds of the present disclosure are N. Its meaning is that any two of X 1 , X 2 , and X 3 can be N, and the other is C(R 0 ); and specifically, four situations that: X 1 and X 2 are N, and X 3 is C(R 0 ); X 2 and X 3 are N, and X 1 is C(R 0 ); X 1 and X 3 are N, and X 2 is C(R 0 ); and X 1 , X 2 , and X 3 are all N are included.
- m 1 +m 2 +m 3 +q 1 +q 2 +q 3 is 1, 2, or 3
- n 1 +n 2 +n 3 +t 1 +t 2 +t 3 is 1 or 2.
- the number of cyano and the number of adamantyl may or may not be equal.
- the total number of cyano substituents in the compounds of the present disclosure is selected from 1, 2, or 3, and optionally, the total number of the cyano substituents in the compounds of the present disclosure is selected from 1 or 2.
- the total number of adamantyl substituents in the compounds of the present disclosure is selected from 1 or 2.
- the total number of the adamantyl substituents in the compounds of the present disclosure is 1.
- the Ar 1 , the Ar 2 , and the Ar 3 are the same or different, and are each independently selected from substituted or unsubstituted aryl with 6 to 25 carbon atoms, or substituted or unsubstituted heteroaryl with 5 to 20 carbon atoms.
- substituents in the Ar 1 to Ar 3 are the same or different, and are each independently selected from deuterium, a halogen group, cyano, a group A, trialkylsilyl with 3 to 8 carbon atoms, triphenylsilyl, alkyl with 1 to 4 carbon atoms, haloalkyl with 1 to 4 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, alkoxy with 1 to 4 carbon atoms, alkylthio with 1 to 4 carbon atoms, aryloxy with 6 to 15 carbon atoms, or arylthio with 6 to 15 carbon atoms; the group A is selected from substituted or unsubstituted heteroaryl with 5 to 18 carbon atoms or substituted or unsubstituted aryl with 6 to 20 carbon atoms; and substituents in the group A are selected from deuterium, a halogen group, cyano, alkyl with 1 to 4 carbon atoms, or hal
- any two adjacent substituents are connected to each other to form an aliphatic ring, which means that two adjacent substituents connected to a same atom are connected to each other to form a spirocyclic ring; and any two adjacent substituents are connected to each other to form an aromatic ring, which means that two adjacent substituents connected to adjacent atoms are connected to each other to form a fused ring.
- the substituents in the Ar 1 to Ar 3 are the same or different, and are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl, trifluoromethyl, trimethylsilyl, methoxy, ethoxy, isopropoxy, methylthio, cyclopentyl, cyclohexyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, 9,9-dimethylfluorenyl, pyridyl, quinolyl, isoquinolyl, pyrimidinyl, carbazolyl, dibenzofuranyl, or dibenzothienyl; and optionally, any two adjacent substituents form a 5- to 6-membered aliphatic ring or a 6- to 13-membered aromatic ring.
- the Ar 1 , the Ar 2 , and the Ar 3 are the same or different, and are each independently selected from the group consisting of groups represented by the following formulae i-1 to i-15:
- M 1 is selected from a single bond
- G 1 to G 5 are each independently selected from N or C(J 1 ), and at least one of G 1 to G 5 is selected from N; and when two or more of G 1 to G 5 are selected from C(J 1 ), any two J 1 are the same or different;
- G 6 to G 13 are each independently selected from N or C(J 2 ), and at least one of G 6 to G 13 is selected from N; and when two or more of G 6 to G 13 are selected from C(J 2 ), any two J 2 are the same or different;
- G 14 to G 23 are each independently selected from N or C(J 3 ), and at least one of G 14 to G 23 is selected from N; and when two or more of G 14 to G 23 are selected from C(J 3 ), any two J 3 are the same or different;
- G 24 to G 33 are each independently selected from N or C(J 4 ), and at least one of G 24 to G 33 is selected from N; and when two or more of G 24 to G 33 are selected from C(J 4 ), any two J 4 are the same or different;
- G 34 to G 37 are each independently selected from N or C(J 5 ), and when two or more of G 34 to G 37 are selected from C(J 5 ), any two J 5 are the same or different;
- Z 1 is selected from hydrogen, deuterium, a halogen group, cyano, alkylsilyl with 3 to 8 carbon atoms, alkyl with 1 to 6 carbon atoms, haloalkyl with 1 to 6 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, alkoxy with 1 to 6 carbon atoms, alkylthio with 1 to 6 carbon atoms, or triphenylsilyl;
- Z 2 to Z 9 , and Z 21 are each independently selected from hydrogen, deuterium, a halogen group, cyano, alkylsilyl with 3 to 8 carbon atoms, alkyl with 1 to 6 carbon atoms, haloalkyl with 1 to 6 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, alkoxy with 1 to 6 carbon atoms, alkylthio with 1 to 6 carbon atoms, triphenylsilyl, or heteroaryl with 3 to 18 carbon atoms;
- Z 10 to Z 20 , and J 1 to J 5 are each independently selected from hydrogen, deuterium, a halogen group, cyano, alkylsilyl with 3 to 8 carbon atoms, alkyl with 1 to 6 carbon atoms, haloalkyl with 1 to 6 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, alkoxy with 1 to 6 carbon atoms, alkylthio with 1 to 6 carbon atoms, triphenylsilyl, aryl with 6 to 18 carbon atoms, or heteroaryl with 3 to 18 carbon atoms; optionally, two adjacent Z 19 are connected to each other to form a 5- to 10-membered aromatic ring or a 5- to 10-membered heteroaromatic ring; and optionally, two adjacent Z 20 are connected to each other to form a 5- to 10-membered aromatic ring or a 5- to 10-membered heteroaromatic ring;
- h 1 to h 21 are represented by h k
- Z 1 to Z 21 are represented by Z k
- k is a variable, and represents any integer from 1 to 21, and h k represents the number of a substituent Z k ; when k is selected from 5 or 17, h k is selected from 1, 2 or 3; when k is selected from 2, 7, 8, 12, 15, 16, 18 or 21, h k is selected from 1, 2, 3 or 4; when k is selected from 1, 3, 4, 6, 9 or 14, h k is selected from 1, 2, 3, 4 or 5; when k is 13, h k is selected from 1, 2, 3, 4, 5, or 6; when k is selected from 10 or 19, h k is selected from 1, 2, 3, 4, 5, 6 or 7; when k is 20, h k is selected from 1, 2, 3, 4, 5, 6, 7, or 8; when k is 11, h k is selected from 1, 2, 3, 4, 5, 6, 7, 8 or 9; and when h k is greater than 1, any two Z k are the same or different;
- K 1 is selected from O, S, N(Z 22 ), C(Z 23 Z 24 ), or Si(Z 23 Z 24 ); where Z 22 , Z 23 , and Z 24 are each independently selected from aryl with 6 to 18 carbon atoms, heteroaryl with 3 to 18 carbon atoms, alkyl with 1 to 6 carbon atoms or cycloalkyl with 5 to 10 carbon atoms; or the Z 23 and the Z 24 are connected to each other to form a saturated or unsaturated ring with 5 to 13 carbon atoms together with the atoms to which they are jointly connected; and
- K 2 is selected from a single bond, O, S, N(Z 25 ), C(Z 26 Z 27 ), or Si(Z 26 Z 27 ); where Z 25 , Z 26 , and Z 27 are each independently selected from aryl with 6 to 18 carbon atoms, heteroaryl with 3 to 18 carbon atoms, alkyl with 1 to 6 carbon atoms, or cycloalkyl with 5 to 10 carbon atoms, or the Z 26 and the Z 27 are connected to each other to form a saturated or unsaturated ring with 5 to 13 carbon atoms together with the atoms to which they are jointly connected.
- the ring can be a 5-membered ring, for example
- the ring can also be a 6-membered ring, for example
- the ring can also be a 13-membered ring, for example
- the number of carbon atoms on the ring formed by connecting the two substituents Z 23 and Z 24 to each other can also be other values, which will not be listed here.
- the ring formed by connecting Z 26 and Z 27 to each other is similar to that of the Z 23 and the Z 24 , which will not be repeated here.
- Ar 1 , Ar 2 , and Ar 3 are the same or different, and are each independently selected from a substituted or unsubstituted group V, and the unsubstituted group V is selected from the group consisting of:
- the substituted group V has one or two or more substituents, and the substituents are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl, trifluoromethyl, trimethylsilyl, alkoxy with 1 to 4 carbon atoms, alkylthio with 1 to 4 carbon atoms, cyclopentyl, cyclohexyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, 9,9-dimethylfluorenyl, pyridyl, quinolyl, isoquinolyl, pyrimidinyl, carbazolyl, dibenzofuranyl, or dibenzothienyl.
- Ar 1 , Ar 2 , and Ar 3 are the same or different, and are each independently selected from a substituted or unsubstituted group V′, and the unsubstituted group V′ is selected from the group consisting of:
- the substituted group V′ has one or two or more substituents, and the substituents are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl, trifluoromethyl, trimethylsilyl, alkoxy with 1 to 4 carbon atoms, alkylthio with 1 to 4 carbon atoms, cyclopentyl, cyclohexyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, 9,9-dimethylfluorenyl, pyridyl, quinolyl, isoquinolyl, pyrimidinyl, carbazolyl, dibenzofuranyl, or dibenzothienyl.
- the Ar 1 , the Ar 2 , and the Ar 3 are each independently selected from substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted fluorenyl, substituted or unsubstituted quinolyl, substituted or unsubstituted isoquinolyl, substituted or unsubstituted carbazolyl, substituted or unsubstituted dibenzothienyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted azadibenzothienyl, substituted or unsubstituted azadibenzofuranyl, substituted or unsubstituted azacarbazolyl, substituted or unsubstituted phenanthryl, substituted or unsubstituted or unsubstitute
- the Ar 1 , the Ar 2 , and the Ar 3 are the same or different, and are each independently selected from the group consisting of:
- the Ar 1 , the Ar 2 , and the Ar 3 are the same or different, and are each independently selected from the group consisting of:
- the L 1 , the L 2 , and the L 3 are the same or different, and are each independently selected from a single bond or selected from the group consisting of groups represented by formulae j-1 to j-14:
- M 2 is selected from a single bond
- Q 1 to Q 5 are each independently selected from N or C(J 5 ), and at least one of Q 1 to Q 5 is selected from N; and when two or more of Q 1 to Q 5 are selected from C(J 5 ), any two J 5 are the same or different;
- Q 6 to Q 13 are each independently selected from N or C(J 6 ), and at least one of Q 6 to Q 13 is selected from N; and when two or more of Q 6 to Q 13 are selected from C(J 6 ), any two J 6 are the same or different;
- Q 14 to Q 23 are each independently selected from N, C or C(J 7 ), and at least one of Q 14 to Q 23 is selected from N; and when two or more of Q 14 to Q 23 are selected from C(J 7 ), any two J 7 are the same or different;
- Q 24 to Q 33 are each independently selected from N, C or C(J 8 ), and at least one of Q 24 -Q 33 is selected from N; and when two or more of Q 24 to Q 33 are selected from C(J 8 ), any two J 8 are the same or different;
- E 1 to E 14 , and J 5 to J 8 are each independently selected from: hydrogen, deuterium, a halogen group, cyano, heteroaryl with 3 to 20 carbon atoms, aryl with 6 to 20 carbon atoms, alkylsilyl with 3 to 8 carbon atoms, triphenylsilyl, alkyl with 1 to 6 carbon atoms, haloalkyl with 1 to 6 carbon atoms, alkenyl with 2 to 6 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, heterocycloalkyl with 2 to 6 carbon atoms, alkoxy with 1 to 6 carbon atoms, alkylthio with 1 to 6 carbon atoms, aryloxy with 6 to 18 carbon atoms, or arylthio with 6 to 18 carbon atoms;
- e 1 to e 14 are represented by e r
- E 1 to E 14 are represented by E r
- r is a variable, and represents any integer from 1 to 14, and e r represents the number of a substituent E r ; when r is selected from 1, 2, 3, 4, 5, 6, 13 or 14, e r is selected from 1, 2, 3 or 4; when r is selected from 7 or 11, e r is selected from 1, 2, 3, 4, 5 or 6; when r is 9 or 12, e r is selected from 1, 2, 3, 4, 5, 6, or 7; when r is selected from 8 or 10, e r is selected from 1, 2, 3, 4, 5, 6, 7, or 8; and when e r is greater than 1, any two E r are the same or different;
- K 3 is selected from O, S, Se, N(E 15 ), C(E 16 E 17 ), or Si(E 18 E 19 ); where E 15 , E 16 , E 17 , E 18 , and E 19 are each independently selected from hydrogen, aryl with 6 to 20 carbon atoms, heteroaryl with 3 to 20 carbon atoms, alkyl with 1 to 6 carbon atoms, alkenyl with 2 to 6 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, or heterocycloalkyl with 2 to 6 carbon atoms;
- the E 16 and the E 17 are connected to each other to form a 5- to 13-membered aliphatic ring or a 5- to 13-membered aromatic ring together with the atoms to which they are jointly connected;
- the E 18 and the E 19 are connected to each other to form a 5- to 13-membered aliphatic ring or a 5- to 13-membered aromatic ring together with the atoms to which they are jointly connected;
- each K 4 is independently selected from a single bond, O, S, Se, N(E 20 ), C(E 21 E 22 ), or Si(E 23 E 24 );
- E 20 , E 21 , E 22 , E 23 , and E 24 are each independently selected from hydrogen, aryl with 6 to 20 carbon atoms, heteroaryl with 3 to 20 carbon atoms, alkyl with 1 to 6 carbon atoms, alkenyl with 2 to 6 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, or heterocycloalkyl with 2 to 10 carbon atoms;
- the E 21 and the E 22 are connected to each other to form a 5- to 13-membered aliphatic ring or a 5- to 13-membered aromatic ring together with the atoms to which they are jointly connected;
- the E 23 and the E 24 are connected to each other to form a 5- to 13-membered aliphatic ring or a 5- to 13-membered aromatic ring together with the atoms to which they are jointly connected.
- the L 1 , the L 2 , and the L 3 are the same or different, and are each independently selected from a single bond, substituted or unsubstituted arylene with 6 to 20 carbon atoms, or substituted or unsubstituted heteroarylene with 5 to 18 carbon atoms.
- substituents in L 1 , L 2 , and L 3 are the same or different, and are each independently selected from deuterium, a halogen group, cyano, a group A, trialkylsilyl with 3 to 8 carbon atoms, triphenylsilyl, alkyl with 1 to 4 carbon atoms, haloalkyl with 1 to 4 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, alkoxy with 1 to 4 carbon atoms, alkylthio with 1 to 4 carbon atoms, aryloxy with 6 to 15 carbon atoms, or arylthio with 6 to 15 carbon atoms; the group A is selected from substituted or unsubstituted heteroaryl with 5 to 12 carbon atoms or substituted or unsubstituted aryl with 6 to 15 carbon atoms, and substituents in the group A are selected from deuterium, a halogen group, cyano, alkyl with 1 to 4 carbon atom
- the substituents in the L 1 , the L 2 , and the L 3 are the same or different, and are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl, trifluoromethyl, trimethylsilyl, methoxy, ethoxy, isopropoxy, methylthio, cyclopentyl, cyclohexyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, 9,9-dimethylfluorenyl, pyridyl, quinolyl, isoquinolyl, pyrimidinyl, carbazolyl, dibenzofuranyl, or dibenzothienyl; and optionally, any two adjacent substituents form a 5- to 6-membered aliphatic ring or a 6- to 13-membered aromatic ring.
- L 1 , L 2 , and L 3 are the same or different, and are each independently selected from a single bond, and a substituted or unsubstituted group W, and the unsubstituted group W is selected from the group consisting of:
- the substituents in the group W are each independently selected from the group consisting of deuterium, fluorine, chlorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl, alkoxy with 1 to 4 carbon atoms, trifluoromethyl, trimethylsilyl, cyclopentyl, cyclohexyl, phenyl, biphenyl, naphthyl, fluorenyl, 9,9-dimethylfluorenyl, pyridyl, quinolyl, isoquinolyl, pyrimidinyl, dibenzofuranyl, dibenzothienyl, and carbazolyl; and when the number of the substituents in the group W is more than 1, the substituents are the same or different.
- the L 1 , the L 2 , and the L 3 are the same or different, and are each independently selected from a single bond, substituted or unsubstituted phenylene, substituted or unsubstituted biphenylene, substituted or unsubstituted terphenylene, substituted or unsubstituted naphthylene, substituted or unsubstituted fluorenylene, substituted or unsubstituted spiro[cyclopentane-1,9′-fluorenylene], substituted or unsubstituted spiro[cyclohexane-1,9′-fluorenylene], substituted or unsubstituted phenanthrolinylene, substituted or unsubstituted quinolylene, substituted or unsubstituted pyridylene, substituted or unsubstituted isoquinolylene, substituted or unsubstituted carbazolylene, substituted or unsubstituted
- L 1 and L 2 are the same or different, and are each independently selected from a single bond or from the group consisting of:
- L 3 is selected from a single bond or the group consisting of:
- At least two of X 1 , X 2 , and X 3 are N, and at least one cyano and at least one adamantyl are connected to Y 1 , Y 2 , and Y 3 in total.
- Y 1 and Y 2 are each independently selected from the group consisting of:
- Y 3 is selected from the group consisting of:
- Y 3 is connected to at least one cyano, i.e., m 3 +q 3 ⁇ 1, and/or Y 3 is connected to at least one adamantyl, i.e., n 3 +t 3 ⁇ 1.
- the nitrogen-containing compound is selected from the group consisting of the following compounds:
- reaction flasks are plugged with suitable rubber stoppers, and a substrate was injected through a syringe. Glassware was dried.
- a chromatographic column was a silica gel column and silica gel (100-200-mesh) was purchased from the Qingdao Ocean Chemical Factory.
- MS mass spectrum
- Target compounds were detected by UV at 210 nm/254 nm by using Agilent 1260 pre-HPLC or Calesep pump 250 pre-HPLC (column model: NOVASEP 50/80 mm DAC).
- a compound 14 was prepared in the same manner as that in Preparation example 1, except that 2-(4-biphenyl)-4-chloro-6-phenyl-1,3,5-triazine (6.50 g, 20.00 mmol) was used instead of 2-chloro-4,6-diphenyl-1,3,5-triazine in Preparation example 1 to obtain the compound 14 (7.72 g, yield: 75%).
- MS (ESI, pos.ion) m/z: 545.26 [M+H] + .
- magnesium sheet (3.16 g, 131.85 mmol) and 30 ml of a solution of tetrahydrofuran were added into a three-necked flask, the system temperature was raised to 60° C., and iodine (0.55 g, 2.19 mmol) was added to the system.
- iodine (0.55 g, 2.19 mmol) was added to the system.
- a compound 4-bromobenzonitrile (20.0 g, 109.87 mmol) was completely dissolved in 30 ml of a solution of THF, and slowly added dropwise to the system within 30 min while the temperature to be 60° C. After the dropwise addition, the reaction was stirred at 60° C. for 2 h.
- Sub 1-I-A1 (20.00 g, 68.32 mmol), p-chlorophenylboronic acid (10.89 g, 69.68 mmol), tetrakis(triphenylphosphine)palladium (1.57 g, 1.36 mmol), potassium carbonate (18.89 g, 136.64 mmol), tetrabutylammonium bromide (0.44 g, 1.36 mmol), toluene (160 mL), ethanol (80 mL) and deionized water (40 mL) were added to a three-necked flask, the mixture was heated to 78° C. under nitrogen protection, and stirred under heating and reflux for 8 h.
- reaction solution was cooled to room temperature, and extracted with toluene (200 mL), the organic phases were mixed, and the combined organic layer was dried over anhydrous magnesium sulfate, filtered and concentrated to obtain a crude product; and the crude product was purified by silica gel column chromatography to give an intermediate sub 1-II-A1 (16.87 g, yield: 67%) as a solid.
- the intermediate sub 1-A1 (10.00 g, 21.72 mmol), a-1 (6.32 g, 21.72 mmol), tetrakis(triphenylphosphine)palladium (0.50 g, 0.43 mmol), potassium carbonate (6.00 g, 43.44 mmol), tetrabutylammonium bromide (0.07 g, 0.21 mmol), toluene (80 mL), ethanol (40 mL) and deionized water (20 mL) were added to a three-necked flask, heated to 78° C. under nitrogen atmosphere, and stirred under heating and reflux for 15 h.
- the intermediate a-1 (35.0 g, 120.1 mmol) was added to a round bottom flask, 630 mL of dry THF was added to the flask, and the system was cooled to ⁇ 80° C. to ⁇ 90° C. with liquid nitrogen, then n-butyllithium (8.46 g, 132.1 mmol) was added dropwise, and the reaction mixture was stirred for 1 h after dropwise addition.
- Trimethyl borate (13.7 g, 14.7 mL, 132.1 mmol) was added dropwise at the same temperature, after dropwise addition, the resulted mixture was stirred at ⁇ 80° C. to ⁇ 90° C. for 1 h, then naturally heated to room temperature, the reaction was completed.
- the solution was cooled to room temperature, the reaction solution was extracted with toluene and water, the organic phases were mixed, and the combined organic layer was dried over anhydrous magnesium sulfate, filtered, and concentrated to obtain a crude product; and the crude product was purified by silica gel column chromatography to obtain an intermediate a-1-2 (19.5 g, yield: 55%) as a solid.
- the intermediate a-1-2 (24.0 g, 51.3 mmol), bis(pinacolato)diboron (19.5 g, 77.0 mmol), Pd(dppf)Cl 2 (0.7 g, 1.0 mmol), and KOAc (10.0 g, 102.6 mmol) were added into 1,4-dioxane (200 mL), and a reaction was carried out under reflux at 80° C. for 12 h. When the reaction was completed, the reaction solution was cooled to room temperature, and extracted with CH 2 Cl 2 and water. The separated organic phase was dried over MgSO 4 , the obtained organic layer was concentrated to obtained a residue, and the residue was subjected to silica gel column chromatography to obtain an intermediate a-1-3 (16.1 g, yield: 61%).
- magnesium sheet (2.9 g, 120.9 mmol) and 30 mL of tetrahydrofuran (THF) were added into a three-necked flask, the system temperature was raised to 80° C., iodine (0.6 g, 2.4 mmol) was added to the solution, 8-bromobenzofuro[2,3-B]pyridine (30.0 g, 120.9 mmol) was dissolved completely in 30 mL of THF solvent, and slowly added dropwise to the solution within 30 min while the temperature was kept at 80° C. After the dropwise addition was complete, a reaction was carried out under stirring at 80° C. for 2 h to obtain a mixed solution.
- THF tetrahydrofuran
- magnesium sheet (1.6 g, 69.3 mmol) and 10 mL of tetrahydrofuran (THF) were added into a three-necked flask, the mixture was heated to 80° C., iodine (0.3 g, 1.4 mmol) was added to the mixture, b-1 (30.0 g, 120.9 mmol) was dissolved completely in 15 mL of THF solvent, and slowly added dropwise to the mixture within 30 min while the temperature was kept at 80° C. After the dropwise addition was complete, a reaction was carried out under stirring at 80° C. for 2 h to obtain a mixed solution.
- THF tetrahydrofuran
- a-I-1 (22.0 g, 69.3 mmol) dissolved in 50 mL of THF was added dropwise to the mixed solution, and after stirring for 3 h, the reaction was completed.
- the reaction solution was extracted with toluene (200 mL), the organic phases were mixed, and the combined organic layer was dried over anhydrous magnesium sulfate, filtered and concentrated in a vacuum to obtain a crude product; and the crude product was purified by silica gel column chromatography, recrystallized with methanol, and filtered to obtain an intermediate a-2-2 (21.3 g, yield:54%) as a solid.
- the intermediate a-2-2 (21.0 g, 6.8 mmol), 4-cyano-4-biphenylboronic acid (8.4 g, 37.6 mmol), tetrakis(triphenylphosphine)palladium (0.8 g, 0.7 mmol), potassium carbonate (10.1 g, 73.7 mmol), tetrabutylammonium bromide (0.12 g, 0.37 mmol), toluene (160 mL), ethanol (80 mL) and deionized water (40 mL) were added to a three-necked flask, the mixture was heated to reflux at 76° C. under nitrogen atmosphere, and stirred for 15 h.
- a compound 55, a compound 81, a compound 216, a compound 570, a compound 577, a compound 598 and a compound 619 were also prepared by using purchased intermediates as raw materials by reference to the preparation methods and operation processes of the above compounds.
- the compound 55 was synthesized by reference to the process for the preparation of the compound 63 to obtain the compound 55 (5.70 g) as a solid. MS (ESI, pos.ion) m/z: 520.18 [M+H] + .
- the compound 81 was synthesized by reference to the process for the preparation of the compound 63 to obtain the compound 81 (5.50 g) as a solid. MS (ESI, pos.ion) m/z: 695.28 [M+H] + .
- the compound 216 was synthesized by referring to the process for the preparation of the compound 483 to obtain the compound 216 (3.70 g) as a solid. MS (ESI, pos.ion) m/z: 575.13 [M+H] + .
- the compound 570 was synthesized by reference to the process for the preparation of compound 482 to obtain the compound 570 (5.35 g) as a solid. MS (ESI, pos.ion) m/z: 549.25 [M+H] + .
- the compound 577 was synthesized by reference to the process for the preparation of the compound 30 to obtain the compound 577 (8.45 g) as a solid.
- the compound 598 was synthesized by reference to the process for the preparation of the compound 483 to obtain the compound 598 (5.80 g) as a solid.
- the compound 619 was synthesized by reference to the process for the preparation of the compound 483 to obtain the compound 619 (8.27 g) as a solid.
- Embodiments of the present disclosure also provide an organic electroluminescent device, including an anode, a cathode and a functional layer between the anode and the cathode, and the functional layer includes the above nitrogen-containing compound of the present disclosure.
- the functional layer includes an electron transport layer including the nitrogen-containing compound of the present disclosure.
- the nitrogen-containing compound of the present disclosure is used as an electron transport layer material of an electronic element, the efficiency, and service life of the device can be improved, and the operating voltage can be reduced.
- the electronic element may be an organic electroluminescent device.
- the organic electroluminescent device may include an anode 100 , a hole transport layer 320 , an electron blocking layer 322 , an organic luminescence layer 330 as an energy conversion layer, a hole blocking layer 341 , an electron transport layer 340 , and a cathode 200 which are sequentially stacked.
- the hole transport layer 320 , the electron blocking layer 322 , the organic luminescence layer 330 as the energy conversion layer, the hole blocking layer 341 , and the electron transport layer 340 together constitute the functional layer 300 .
- the anode 100 includes an anode material, which is preferably a material with a large work function that facilitates hole injection into the functional layer.
- the anode material include metals such as nickel, platinum, vanadium, chromium, copper, zinc, and gold, or their alloys; metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO) and indium zinc oxide (IZO); combined metals and oxides, such as ZnO:Al or SnO 2 :Sb; or a conductive polymer such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene] (PEDT), polypyrrole, and polyaniline, but are not limited to these.
- a transparent electrode containing indium tin oxide (ITO) as the anode is preferably included.
- the hole transport layer 320 and the electron blocking layer 322 each include one or more hole transport materials, and the hole transport materials may be selected from a carbazole polymer, carbazole-linked triarylamine compounds, or other types of compounds, which are not particularly limited in the present disclosure.
- the hole transport layer 320 may be composed of a compound NPB or a compound HT-01, and the electron blocking layer 322 may include a compound EB-01 or TCTA.
- the organic luminescence layer 330 may be composed of a single luminescence material, and may also include a host material and a doping material.
- the organic luminescence layer 330 is composed of the host material and the doping material, and holes injected into the organic luminescence layer 330 and electrons injected into the organic luminescence layer 330 can be recombined in the organic luminescence layer 330 to form excitons, the excitons transfer energy to the host material, and the host material transfers energy to the doping material, thus enabling the doping material to emit light.
- the host material of the organic luminescence layer 330 can be a metal chelate compound, a bis-styryl derivative, an aromatic amine derivative, a dibenzofuran derivative or other types of materials, which is not specially limited in the present disclosure.
- the host material of the organic luminescence layer 330 is BH-01 or ⁇ , ⁇ -AND.
- the doping material of the organic luminescence layer 330 may be a compound having a condensed aryl ring or its derivative, a compound having a heteroaryl ring or its derivative, an aromatic amine derivative, or other materials, which is not particularly limited in the present disclosure.
- the doping material of the organic luminescence layer 330 is BD-01.
- the electron transport layer 340 may be of a single-layer structure or a multi-layer structure, and may include one or more electron transport materials, and the electron transport materials may be selected from, but are not limited to, a benzimidazole derivative, an oxadiazole derivative, a quinoxaline derivative, or other electron transport materials.
- the electron transport layer material contains the organic compound of the present disclosure.
- the cathode 200 may include a cathode material, which is a material having a small work function that facilitates electron injection into the functional layer.
- a cathode material which is a material having a small work function that facilitates electron injection into the functional layer.
- the cathode material include, but are not limited to, metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead or their alloys; or multilayer materials such as LiF/Al, Liq/Al, LiO 2 /Al, LiF/Ca, LiF/Al, and BaF 2 /Ca.
- a metal electrode containing magnesium and silver as the cathode is preferably included.
- a hole injection layer 310 may also be arranged between the anode 100 and the hole transport layer 320 to enhance the ability to inject holes into the hole transport layer 320 .
- the hole injection layer 310 can be made of a benzidine derivative, a starburst arylamine compound, a phthalocyanine derivative or other materials, which is not specially limited in the present disclosure.
- the hole injection layer 310 is composed of F4-TCNQ or m-MTDATA.
- an electron injection layer 350 can also be arranged between the cathode 200 and the electron transport layer 340 so as to enhance the ability to inject electrons into the electron transport layer 340 .
- the electron injection layer 350 may include an inorganic material such as an alkali metal sulfide, and an alkali metal halide, or may include a complex of an alkali metal and an organic substance.
- the electron injection layer 350 may include Yb.
- the electronic element may be a photoelectric conversion device.
- the photoelectric conversion device may include an anode and a cathode which are disposed oppositely, and a functional layer disposed between the anode and the cathode; and the functional layer includes the nitrogen-containing compound provided by the present disclosure.
- a photoelectric conversion device may include an anode 100 , a hole transport layer 320 , a photoelectric conversion layer 360 , an electron transport layer 340 , and a cathode 200 which are sequentially stacked.
- the hole transport layer 320 , the photoelectric conversion layer 360 , and the electron transport layer 340 constitute the functional layer 300 .
- the photoelectric conversion device can be a solar cell, in particular an organic thin-film solar cell.
- the solar cell may include an anode, a hole transport layer, an organic luminescence layer, an electron transport layer and a cathode which are sequentially stacked, and the electron transport layer includes the organic compound of the present disclosure.
- the present disclosure provides an electronic device, including the electronic element according to the second aspect of the present disclosure.
- the electronic device is a first electronic device 400 including the organic electroluminescent device described above.
- the first electronic device 400 may, for example, be a display device, a lighting device, an optical communication device, or other types of electronic devices, and may include, for example, but is not limited to, a computer screen, a mobile phone screen, a television, electronic paper, an emergency lighting lamp, an optical module, and the like.
- the electronic device is a second electronic device 500 including the photoelectric conversion device described above.
- the second electronic device 500 may, for example, be a solar power plant, a light detector, a fingerprint recognition device, an optical module, a CCD camera, or other types of electronic devices.
- An anode was prepared by the following process: an ITO substrate having a thickness of 1500 ⁇ was cut into a dimension of 40 mm ⁇ 40 mm ⁇ 0.7 mm to be prepared into a top-emitting experimental substrate with a cathode overlap region, an anode and an insulating layer pattern by adopting a photoetching process, and surface treatment was performed by utilizing ultraviolet ozone and O 2 :N 2 plasma so as to increase the work function of the anode (the experimental substrate) and clean the experimental substrate.
- m-MTDATA (4,4′,4′′-tris(N-3-methylphenyl-N-phenylamino)triphenylamine) was vacuum-evaporated on the experimental substrate (the anode) to form a hole injection layer (HIL) having a thickness of 120 ⁇ , and NPB was vacuum-evaporated on the hole injection layer to form a hole transport layer (HTL) having a thickness of 1030 ⁇ .
- HIL hole injection layer
- HTL hole transport layer
- EBL electron blocking layer
- ⁇ , ⁇ -ADN was used as a host while BD-1 was doped, and the host and the dopant form an organic luminescence layer (EML) having a thickness of 220 ⁇ at a film thickness ratio of 30:3.
- EML organic luminescence layer
- a compound 1 of the present disclosure was evaporated on the luminescence layer to form an electron transport layer (ETL) having a thickness of 300 ⁇ , Yb was evaporated on the electron transport layer to form an electron injection layer (EIL) having a thickness of 10 ⁇ , and then magnesium (Mg) and silver (Ag) were mixed and vacuum-evaporated on the electron injection layer at an evaporation rate of 1:10 to form a cathode having a thickness of 120 ⁇ .
- ETL electron transport layer
- EIL electron injection layer
- Mg magnesium
- Ag silver
- CPL capping layer
- An organic electroluminescent device was manufactured by the same method as that in Example 1 except that compounds shown in Table 5 were respectively used when the electron transport layer (ETL) was formed.
- ETL electron transport layer
- Comparative examples 1 to 6 an organic electroluminescent device was manufactured by the same method as that in Example 1, except that compounds A, B, C, E, F and G were used as the electron transport layer instead of the compound 1.
- the IVL data compares the test results at 10 mA/cm 2 , and the service life is a test result at a current density of 20 mA/cm 2 .
- the organic electroluminescent device prepared by using the compound of the present disclosure in the electron transport layer (ETL) can achieve higher luminous efficiency, and the service life of the device can be significantly improved.
- the adamantyl and the cyano group are connected to the nitrogen-containing heteroaryl core structure via the linking group in the nitrogen-containing compound structure of the present disclosure, highly polar cyano makes this part of the structure have a large dipole moment, thus the polarity of the compound is increased, and the organic materials with a high electron mobility are obtained, and when the compound is used as the electron transport layer of the electronic element, the efficiency, and service life of the device can be improved, and the operating voltage can be reduced.
- 1-adamantyl itself can avoid the stacking of conjugated planes to form ⁇ aggregation, so that the film-forming properties of the material can be improved, the molecular weight and asymmetry are simultaneously enhanced at the same time, the thermal stability of the molecule is improved, the crystallinity of the material is also improved to a certain extent. Therefore, the stability of the compound can be improved when applied to the organic electroluminescent device, resulting in increased the service life of the device, and easier to be mass-production. From the test data of Examples 1 to 31 and Comparative example 4, it can be seen that 1-adamantyl connected at the end of the compound is superior to 2-adamantyl in increasing the polarity and thermal stability of the compound.
- the compounds When the compounds were used in mass production of devices, the compounds needed to be heated under evaporation conditions for a long period of time. If the thermal stability of the molecular structures of the compounds was poor under heated conditions, the purity of the compounds decreased under heated conditions over a long period of time, resulting in large differences in the performance of devices prepared early, middle and late stages of mass production.
- Heat resistance tests were carried out on the compounds of the present disclosure and comparative compounds D, E, A and G, respectively, in a high vacuum environment ( ⁇ 10 ⁇ 6 Pa) at a temperature corresponding to an evaporation rate of 5 ⁇ /s for 200 h.
- the purity drop values of the nitrogen-containing compounds of the present disclosure after heating are all less than 0.4%, with most of them being less than 0.3%.
- the purity drop value of the compound is more than 1%, the efficiency and service life of the device will be significantly reduced; and thermally unstable compounds can lead to large differences in the performance of devices prepared early, middle and late stages of mass production in actual production.
- the heat resistance tests of the compounds in the present disclosure demonstrated that purity drop values of the compounds are all less than 0.4%, and the purity drop values of the comparative compounds D, E, A, and G are all more than 2% at the evaporation temperature, exceeding the limit of 1%, and thus the nitrogen-containing compounds of the present disclosure also have excellent mass production thermal stability compared with the comparative compounds.
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Abstract
The present disclosure provides a nitrogen-containing compound, an electronic element, and an electronic device, and belongs to the technical field of organic materials. In the nitrogen-containing compound, 1-adamantyl and a cyano group are connected on a nitrogen-containing heteroaryl core structure by a linking group, so that the molecule has a high dipole moment as a whole, organic materials with a high electron mobility can be obtained, and the electron transport properties of the electronic element can be improved, and when the nitrogen-containing compound is used as an electron transport layer of an organic electroluminescent device, the luminous efficiency and service life of the device can be improved, and the operating voltage can be reduced.
Description
The present application claims the priority of Chinese Patent Application No. CN202010789251.8, filed on Aug. 7, 2020, the contents of which are incorporated herein by reference in its entirety a part of the present application. The present application claims the priority of Chinese Patent Application No. CN202010956344.5, filed on Sep. 11, 2020, the contents of which are incorporated herein by reference in its entirety a part of the present application.
The present disclosure relates to the technical field of organic materials, in particular to a nitrogen-containing compound, an electronic element and an electronic device.
As a new generation of display technology, organic electroluminescent device (OLED) have the advantages of ultra-thinness, self-luminescence, wide viewing angle, fast response, high luminous efficiency, good temperature adaptability, simple production process, low driving voltage, low energy consumption, and the like, and have been widely used in industries such as flat panel displays, flexible displays, solid state lighting, and vehicle displays.
An organic luminescence phenomenon refers to a phenomenon in which an organic material is used to convert an electric energy into a luminous energy. An organic luminescence device using the organic luminescence phenomenon generally has a structure including an anode, a cathode, and an organic material layer between the anode and the cathode. In an organic luminescence device structure, when a voltage is applied between the anode and the cathode, holes and electrons are injected into the organic material layer from the anode and the cathode respectively, excitons are formed when the injected holes and electrons meet, and light is emitted when these excitons return to a ground state.
In the existing organic electroluminescent device, the most important problems are service life and efficiency, and with the area of the displays becoming larger, the driving voltage increases accordingly, leading to a decrease in luminous efficiency and power efficiency, and a decrease in service life. Thus, organic materials have to solve these efficiency or service life problems, and there is a need to continuously develop new materials for organic luminescence devices with high efficiency, long service life, and suitability for mass production.
It should be noted that the information disclosed in the background is merely used to enhance an understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art.
The present disclosure aims to provide a nitrogen-containing compound, an electronic element and an electronic device to improve the performance of the electronic element and the electronic device.
In order to achieve the above-mentioned objective of the disclosure, the present disclosure adopts the following technical solutions:
According to one aspect of the present disclosure, a nitrogen-containing compound is provided, having a structure as shown in a formula 1:
where X1, X2, and X3 are the same or different, and are each independently selected from C(R0) or N, and at least one of X1, X2, and X3 is N;
Y1 is
L1, L2, and L3 are the same as or different from each other, and are each independently a single bond, substituted or unsubstituted arylene with 6 to 30 carbon atoms, or substituted or unsubstituted heteroarylene with 3 to 30 carbon atoms;
Ar1, Ar2, and Ar3 are the same as or different from each other, and are each independently selected from substituted or unsubstituted aryl with 6 to 30 carbon atoms, and substituted or unsubstituted heteroaryl with 3 to 30 carbon atoms;
Ad is 1-adamantyl;
m1 to m3 is represented by mi, n1 to n3 is represented by ni, q1 to q3 is represented by qi, and t1 to t3 is represented by ti; and i is a variable, and is selected from 1, 2 or 3;
mi represents the number of cyano on Li, ni represents the number of Ad on Li, qi represents the number of cyano on Ari, and ti represents the number of Ad on Ari;
mi is independently selected from 0, 1, 2 or 3, and when mi is greater than 1, any two m1 are the same or different;
ni is independently selected from 0, 1, 2 or 3, and when ni is greater than 1, any two n1 are the same or different;
qi is independently selected from 0, 1, 2 or 3, and when qi is greater than 1, any two q1 are the same or different;
ti is independently selected from 0, 1, 2 or 3, and when ti is greater than 1, any two ti are the same or different;
m1+m2+m3+q1+q2+q3≥1, and n1+n2+n3+t1+t2+t3≥1;
each R0 is the same as or different from each other, and is independently selected from hydrogen, deuterium, alkyl with 1 to 10 carbon atoms, substituted or unsubstituted heteroaryl with 3 to 20 carbon atoms, or substituted or unsubstituted aryl with 6 to 20 carbon atoms; and
substituents in R0, L1 to L3 and Ar1 to Ar3 are the same or different, and are each independently selected from deuterium, a halogen group, cyano, a group A, alkyl with 1 to 10 carbon atoms, haloalkyl with 1 to 10 carbon atoms, alkenyl with 2 to 10 carbon atoms, cycloalkyl with 3 to 10 carbon atoms, heterocycloalkyl with 2 to 10 carbon atoms, cycloalkenyl with 5 to 10 carbon atoms, heterocycloalkenyl with 4 to 10 carbon atoms, alkoxy with 1 to 10 carbon atoms, alkylthio with 1 to 10 carbon atoms, aryloxy with 6 to 18 carbon atoms, arylthio with 6 to 18 carbon atoms, arylsilyl with 6 to 18 carbon atoms, or alkylsilyl with 3 to 12 carbon atoms; the group A is selected from substituted or unsubstituted heteroaryl with 3 to 20 carbon atoms, or substituted or unsubstituted aryl with 6 to 20 carbon atoms; and substituents in the group A are selected from deuterium, a halogen group, cyano, alkyl with 1 to 4 carbon atoms, or haloalkyl with 1 to 4 carbon atoms; and optionally, any two adjacent substituents form a ring.
In the nitrogen-containing compound of the present disclosure, nitrogen-containing heteroaryl is used as a core structure, adamantyl and a cyano group are connected on the nitrogen-containing heteroaryl core structure by using aryl or heteroaryl as a linking group, and the presence of cyano makes this part of the structure have a large dipole moment, thus improving the polarity of the material. Cyano and a heteroaryl group are combined, so that organic materials with a high electron mobility can be obtained. When the nitrogen-containing compound is used as an electron transport layer of an electronic element, the efficiency and service life of a device can be improved, and the operating voltage can be reduced. As a rigid and bulky polycyclic alkane structure, adamantyl itself can avoid the stacking of conjugated planes to form π aggregation, so that the film-forming properties of the material can be improved, the molecular weight and asymmetry of the compound are simultaneously enhanced at the same time, the thermal stability of the molecule is improved, the crystallinity of the material is also improved to a certain extent, and the stability of the compound can be improved when the compound is used in the electronic element, making the electronic element easier to be mass-production.
According to a second aspect of the present disclosure, an electronic element is provided, including an anode and a cathode which are oppositely disposed, and a functional layer disposed between the anode and the cathode; and the functional layer includes the nitrogen-containing compound described above.
According to a third aspect of the present disclosure, an electronic device is provided, including the electronic element described above.
It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and are not intended to limit the present disclosure.
The accompanying drawings here, which are incorporated in and constitute a part of this description, illustrate embodiments consistent with the present disclosure, and serve to explain the principles of the present disclosure together with the description. Obviously, the accompanying drawings in the following description are merely some embodiments of the present disclosure, and other drawings can be obtained according to these drawings without inventive labor for those of ordinary skill in the art.
The above and other features and advantages of the present disclosure will become more apparent by describing the embodiments in detail with reference to the accompanying drawings.
100, anode; 200, cathode; 300, functional layer; 310, hole injection layer; 320, hole transport layer; 322, electron blocking layer; 330, organic luminescence layer; 340, electron transport layer; 341, hole blocking layer; 350, electron injection layer; 360, photoelectric conversion layer; 400, first electronic device; and 500, second electronic device.
Embodiments will now be described more fully with reference to the accompanying drawings. However, the embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth here; and on the contrary, these embodiments are provided so that the present disclosure will be thorough and complete, and the concept of the embodiments is fully conveyed to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a thorough understanding of the embodiments of the present disclosure.
In the drawings, the thickness of regions and layers may be exaggerated for clarity. The same reference signs denote the same or similar structures in the drawings, and thus their detailed description will be omitted.
A nitrogen-containing compound in the embodiments of the present disclosure has a structural formula as shown in a formula 1:
where X1, X2, and X3 are the same or different, and are each independently selected from C(R0) or N, and at least one of X1, X2, and X3 is N;
Y1 is
L1, L2, and L3 are the same as or different from each other, and are each independently a single bond, substituted or unsubstituted arylene with 6 to 30 carbon atoms, or substituted or unsubstituted heteroarylene with 3 to 30 carbon atoms;
Ar1, Ar2, and Ar3 are the same as or different from each other, and are each independently selected from substituted or unsubstituted aryl with 6 to 30 carbon atoms, or substituted or unsubstituted heteroaryl with 3 to 30 carbon atoms;
Ad is 1-adamantyl;
m1 to m3 is represented by mi, n1 to n3 is represented by ni, q1 to q3 is represented by qi, and t1 to t3 is represented by ti; and i is a variable, and is selected from 1, 2 or 3;
mi represents the number of cyano on Li, ni represents the number of Ad on Li, qi represents the number of cyano on Ari, and ti represents the number of Ad on Ari;
mi is independently selected from 0, 1, 2 or 3, and when mi is greater than 1, any two mi are the same or different;
ni is independently selected from 0, 1, 2 or 3, and when ni is greater than 1, any two ni are the same or different;
qi is independently selected from 0, 1, 2 or 3, and when qi is greater than 1, any two qi are the same or different;
ti is independently selected from 0, 1, 2 or 3, and when t1 is greater than 1, any two ti are the same or different;
m1+m2+m3+q1+q2+q3≥1, and n1+n2+n3+t1+t2+t3≥1;
each R0 is the same as or different from each other, and is independently selected from hydrogen, deuterium, alkyl with 1 to 10 carbon atoms, substituted or unsubstituted heteroaryl with 3 to 20 carbon atoms, or substituted or unsubstituted aryl with 6 to 20 carbon atoms; and
substituents in R0, L1 to L3 and Ar1 to Ar3 are the same or different, and are each independently selected from deuterium, a halogen group, cyano, a group A, alkyl with 1 to 10 carbon atoms, haloalkyl with 1 to 10 carbon atoms, alkenyl with 2 to 10 carbon atoms, cycloalkyl with 3 to 10 carbon atoms, heterocycloalkyl with 2 to 10 carbon atoms, cycloalkenyl with 5 to 10 carbon atoms, heterocycloalkenyl with 4 to 10 carbon atoms, alkoxy with 1 to 10 carbon atoms, alkylthio with 1 to 10 carbon atoms, aryloxy with 6 to 18 carbon atoms, arylthio with 6 to 18 carbon atoms, arylsilyl with 6 to 18 carbon atoms, or alkylsilyl with 3 to 12 carbon atoms; the group A is selected from substituted or unsubstituted heteroaryl with 3 to 20 carbon atoms, or substituted or unsubstituted aryl with 6 to 20 carbon atoms; and substituents in the group A are selected from deuterium, a halogen group, cyano, alkyl with 1 to 4 carbon atoms, or haloalkyl with 1 to 4 carbon atoms; and optionally, any two adjacent substituents form a ring.
In the nitrogen-containing compound of the present disclosure, nitrogen-containing heteroaryl is used as a core structure, 1-adamantyl and a cyano group are connected on the nitrogen-containing heteroaryl core structure by a linking group, and the presence of cyano makes this part of the structure have a large dipole moment, thus improving the polarity of the material. Cyano and a heteroaryl group are combined, so that organic materials with a high electron mobility can be obtained. When the nitrogen-containing compound is used as an electron transport layer of an electronic element, the efficiency and service life of a device can be improved, and the operating voltage can be reduced. As a rigid and bulky polycyclic alkane structure, adamantyl itself can avoid the direct stacking of conjugated planes to form π aggregation, so that the film-forming properties of the material can be improved, the molecular weight and asymmetry of the compounds are simultaneously enhanced at the same time, the thermal stability of the molecule is improved, the crystallinity of the material is also improved to a certain extent. Therefore, the stability of the compounds can be improved when applied to the electronic element, making the electronic element easier to be mass-production. In addition, compared with connection type of 2-adamantyl, connection type of 1-adamantyl has the advantages that the molecular polarity of the compounds can be improved, and the stability of the compounds is better.
In the present disclosure,
have a same meaning, and refer to a position of bonding to other substituents or connection positions.
In the present disclosure, the number of carbon atoms when L1 to L3, and Ar1 to Ar3 are selected from substituted aryl or substituted heteroaryl refers to the total number of carbon atoms of the aryl or heteroaryl and substituents on the aryl or heteroaryl. For example, substituted aryl with 18 carbon atoms means that the total number of carbon atoms of the aryl and substituents is 18. For example, if Ar1 is 9-methyl-9-phenyl-fluorenyl, it belongs to substituted aryl with 20 carbon atoms.
When any one of L1 to L3 or Ar1 to Ar3 is selected from “substituted aryl(ene)”, the aryl and all substituents on the aryl are taken as a whole as any one of L1 to L3 or Ar1 to Ar3.
In the present disclosure, Y1 is
which means that m1 cyano (CN) substituents and n1 adamantyl (Ad) substituents are connected to L1, and q1 cyano (CN) substituents and t1 adamantyl (Ad) substituents are connected to Ar1. It can be understood that when L1 is a substituted aryl, cyano and adamantyl can be connected to either the aryl or substituents of the aryl; and likewise, cyano connected to Ar1 and adamantyl connected to Ar1 have a same meaning. When Ar1 to Ar3 are substituted aryl or heteroaryl, cyano and adamantyl can be connected to either the aryl or heteroaryl or substituents of the aryl or heteroaryl. For example, Ar1 is selected from naphthyl substituted by phenyl, where cyano can be connected to either phenyl or naphthyl. Similarly, when L1 to L3 are substituted arylene or heteroarylene, cyano and adamantyl can be connected to either the arylene or heteroarylene or substituents of the arylene or heteroarylene. For example, L1 is selected from phenylene substituted by methyl, where cyano can be connected to either methyl or phenylene.
In the present disclosure, cyano and adamantyl can be located on a same linking group Yi or different linking groups Yi (i=1, 2 or 3). For example, in some embodiments, Y3 includes both cyano and adamantyl; and in other embodiments, Y1 includes cyano, and Y3 includes adamantyl. On the other hand, cyano and adamantyl may both be connected to Li or may both be connected to Ari or one of cyano and adamantyl is connected to Li, and the other is connected to Ari. For example, in some embodiments, L1 is connected to one cyano in Y1, and Ar2 is connected to one adamantyl in Y2. In a word, in the chemical formula 1, there is at least one cyano and one adamantyl. When the compound contains a plurality of cyano, the plurality of cyano may be connected to the same Ar or the same L, or may be connected to different Ar or different L. For example, in some embodiments, a total of two cyano are included, where one cyano is connected to Ar1, and the other cyano is connected to Ar2. In other embodiments, a total of two cyano are included, and both cyano are connected to Ar1. For another example, in some embodiments, a total of two cyano are included, where one cyano is connected to L1, and the other cyano is connected to L2. In other embodiments, a total of two cyano are included, and both cyano are connected to L1. Similarly, when a plurality of adamantyl are included in substituents, the plurality of adamantyl may be connected to the same Ar or the same L, or may be connected to different Ar or the same L.
In the present disclosure, adamantyl is 1-adamantyl
Optionally, in some embodiments, adamantyl is
In the present disclosure, C(R0) indicates that a group R0 is connected to a carbon atom.
In the present disclosure, when a specific definition is not otherwise provided, “hetero” means that at least one heteroatom selected from B, N, O, S, Se, Si or P is included in one functional group.
In the present disclosure, the case of sequential prefix nomenclature means that substituents are listed in the order in which they are written. For example, aralkoxy means alkoxy substituted with aryl, alkoxycarbonyl means carbonyl substituted with alkoxy, arylcarbonylalkenyl means alkenyl substituted with arylcarbonyl, and aryloxy means hydroxy substituted with aryl.
In the present disclosure, “aryl” refers to an optional functional group or substituent derived from an aromatic carbocyclic ring. The aryl can be monocyclic aryl or polycyclic aryl. In other words, the aryl can be monocyclic aryl, fused aryl, two or more monocyclic aryl conjugatedly linked by carbon-carbon bonds, two or more monocyclic aryl and fused aryl which are conjugatedly linked by a carbon-carbon bond, and two or more fused aryl conjugatedly linked by carbon-carbon bonds. The fused aryl refers to two or more rings in which two carbon atoms in a ring system are shared by two adjacent rings, where at least one of the rings is aromatic, e.g., the other rings can be cycloalkyl, cycloalkenyl, or aryl. Examples of the aryl in the present disclosure can include, but are not limited to, phenyl, naphthyl, anthryl, phenanthryl, biphenyl, terphenyl, tetraphenyl, pentaphenyl, benzo[9,10]phenanthryl, pyrenyl, benzofluoranthrenyl, chrysenyl, perylenyl, fluorenyl, triphenylene, naphthacenyl, triphenylenyl, and the like. In the present disclosure, fluorenyl may be substituted, and two substituents may be bonded to each other to form a spirocyclic structure. In the situation where the above fluorenyl is substituted, it may be:
In the present disclosure, substituted aryl can be that one or two or more hydrogen atoms in the aryl are substituted by groups such as deuterium atom, a halogen group, cyano, aryl, heteroaryl, alkylsilyl, arylsilyl, alkyl, haloalkyl, cycloalkyl, alkoxy, alkylthio, and the like. For example, specific examples of aryl substituted by heteroaryl include, but are not limited to, phenyl substituted by dibenzofuranyl, phenyl substituted by dibenzothienyl, phenyl substituted by carbazolyl, phenyl substituted by pyridyl, and the like. It should be understood that the number of carbon atoms of the substituted aryl refers to the total number of carbon atoms of the aryl and substituents on the aryl, for example substituted aryl with 18 carbon atoms means that the total number of carbon atoms of the aryl and substituents is 18.
In the present disclosure, examples of aryl as a substituent may include, but are not limited to, phenyl, naphthyl, anthryl, phenanthryl, biphenyl, terphenyl, fluorenyl, dimethylfluorenyl, pyrenyl, and perylenyl.
In the present disclosure, in some embodiments, the number of carbon atoms of the aryl can be selected from 6, 10, 12, 13, 14, 15, 16, 17, 18, 20, 25, or 30. In some embodiments, the aryl is aryl with 6 to 30 carbon atoms; in other embodiments, the aryl is aryl with 6 to 25 carbon atoms; in other embodiments, the aryl is aryl with 6 to 20 carbon atoms; in other embodiments, the aryl is aryl with 6 to 18 carbon atoms; in other embodiments, the aryl is aryl with 6 to 15 carbon atoms; in other embodiments, the aryl is aryl with 6 to 13 carbon atoms; and in other embodiments, the aryl is aryl with 6 to 12 carbon atoms.
In the present disclosure, arylene is a divalent group, and in addition, the above description for aryl may apply to the arylene.
In the present disclosure, heteroaryl refers to a monocyclic or polycyclic system that contains at least one heteroatom independently selected from O, N, P, Si, Se, B, or S in the ring, and at least one ring system is aromatic. Each ring system in the heteroaryl contains a ring composed of 5 to 7 ring atoms, and has one or more points of connection to the remaining part of a molecule. The heteroaryl may be monocyclic heteroaryl or polycyclic heteroaryl, in other words, the heteroaryl may be a single aromatic ring system or a plurality of aromatic ring systems conjugatedly linked via carbon-carbon bonds, and any one aromatic ring system is one aromatic monocyclic ring or one aromatic fused ring. Fused heteroaryl refers to two or more rings in which two atoms in a ring system are shared by two adjacent rings, where at least one of the rings is aromatic, e.g., the other rings may be cycloalkyl, heterocyclyl, cycloalkenyl, or aryl.
For example, heteroaryl may include thienyl, furyl, pyrrolyl, imidazolyl, thiazolyl, oxazolyl, isothiazolyl, oxadiazolyl, triazolyl, azolyl, furazanyl, pyridyl, bipyridyl, phenanthridinyl, pyrimidinyl, triazinyl, acridinyl, pyridazinyl, pyrazinyl, quinolyl, quinazolinyl, quinoxalinyl, phenoxazinyl, phthalazinyl, pyridopyrimidinyl, pyridopyrazinyl, pyrazinopyrazinyl, isoquinolyl, indolyl, carbazolyl, benzoxazolyl, benzimidazolyl, benzothiazolyl, benzocarbazolyl, benzothienyl, dibenzothienyl, thienothienyl, benzofuranyl, phenanthrolinyl, isoxazolyl, thiadiazolyl, benzothiazolyl, phenothiazinyl, silafluorenyl, dibenzofuranyl, as well as N-arylcarbazolyl (e.g., N-phenylcarbazolyl), N-heteroarylcarbazolyl (e.g., N-pyridylcarbazolyl), N-alkylcarbazolyl (e.g., N-methylcarbazolyl), and the like, but is not limited to this. Thienyl, furyl, phenanthrolinyl, etc. are heteroaryl of the single aromatic ring system, and N-arylcarbazolyl, and N-heteroarylcarbazolyl are heteroaryl of the plurality of aromatic ring systems conjugatedly linked via carbon-carbon bonds.
In the present disclosure, substituted heteroaryl may be that one or two or more hydrogen atoms in the heteroaryl are substituted by groups such as deuterium atom, a halogen group, cyano, aryl, heteroaryl, trialkylsilyl, alkyl, cycloalkyl, alkoxy, alkylthio, and the like. For example, specific examples of aryl-substituted heteroaryl include, but are not limited to, dibenzofuranyl substituted by phenyl, dibenzothienyl substituted by phenyl, carbazolyl substituted by phenyl, pyridyl substituted by phenyl, and the like. It should be understood that the number of carbon atoms of the substituted heteroaryl refers to the total number of carbon atoms of the heteroaryl and substituents on the heteroaryl. For example, substituted heteroaryl with 14 carbon atoms means that the total number of carbon atoms of the heteroaryl and substituents is 14.
In the present disclosure, examples of heteroaryl as a substituent may include, but are not limited to, dibenzothienyl, dibenzofuranyl, carbazolyl, N-phenylcarbazolyl, pyridyl, bipyridyl, pyrimidinyl, triazinyl, quinolyl, isoquinolyl, quinazolinyl, benzimidazolyl, indolyl, and phenanthrolinyl.
In the present disclosure, in some embodiments, the number of carbon atoms of the heteroaryl can be selected from 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30. In some embodiments, the heteroaryl is heteroaryl with 3 to 12 carbon atoms, in other embodiments, the heteroaryl is heteroaryl with 3 to 15 carbon atoms, in other embodiments, the heteroaryl is heteroaryl with 5 to 12 carbon atoms, and in other embodiments, the heteroaryl is heteroaryl with 5 to 18 carbon atoms.
In the present disclosure, heteroarylene is a divalent group, and in addition, the above description for heteroaryl may apply to the heteroarylene.
In the present disclosure, the halogen group as a substituent may be fluorine, chlorine, bromine or iodine.
In the present disclosure, “alkyl” includes saturated linear or branched, monovalent or multivalent alkyl with 1 to 10 carbon atoms, where the alkyl may be independently optionally substituted by one or more substituents described in the present disclosure. In some embodiments, an alkyl group contains 1 to 10 carbon atoms; in other embodiments, the alkyl group contains 1 to 8 carbon atoms; in other embodiments, the alkyl group contains 1 to 6 carbon atoms; in other embodiments, the alkyl group contains 1 to 4 carbon atoms; and in other embodiments, the alkyl group contains 1 to 3 carbon atoms. Examples of alkyl groups with 1 to 4 carbon atoms as a substituent include, but are not limited to, methyl (Me, —CH3), ethyl (Et, —CH2CH3), n-propyl (n-Pr, —CH2CH2CH3), isopropyl (i-Pr, —CH(CH3)2), n-butyl (n-Bu, —CH2CH2CH2CH3), 2-methylpropyl or isobutyl (i-Bu, —CH2CH(CH3)2), 1-methylpropyl, sec-butyl (s-Bu, —CH(CH3)CH2CH3), tert-butyl (t-Bu, —C(CH3)3), and the like.
In the present disclosure, “alkenyl” refers to linear or branched, monovalent or multivalent hydrocarbyl containing 2 to 10 carbon atoms, with at least one site of unsaturation, i.e., one carbon-carbon sp2 double bond, and the alkenyl group may be optionally substituted with one or more substituents as described in the present disclosure, including the positionings of “cis” and “trans”, or the positionings of “E” and “Z”. In some embodiments, the number of carbon atoms of the alkenyl is 2 to 6. As non-limiting examples, the alkenyl includes vinyl, allyl, isopropenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 3-methyl-1-butenyl, 1,3-butadienyl, allyl, 1-phenylethen-1-yl, 2-phenylethen-1-yl, 2,2-stilben-1-yl, 2-phenyl-2-(naphthalen-1-yl)ethen-1-yl, 2,2-bis(diphen-1-yl)ethen-1-yl, styryl, and the like.
In the present disclosure, “alkoxy” means that an alkyl group is connected to the remaining part of a molecule via an oxygen atom, where the alkyl group has the meaning as described in the present disclosure. Examples of alkoxy as a substituent include, but are not limited to, methoxy (MeO, —OCH3), ethoxy (EtO, —OCH2CH3), 1-propoxy (n-PrO, n-propoxy, —OCH2CH2CH3), 2-propoxy (i-PrO, i-propoxy, —OCH(CH3)2), 1-butoxy (n-BuO, n-butoxy, —OCH2CH2CH2CH3), 2-methyl-1-propoxy (i-BuO, i-butoxy, —OCH2CH(CH3)2), 2-butoxy (s-BuO, s-butoxy, —OCH(CH3)CH2CH3), 2-methyl-2-propoxy (t-BuO, t-butoxy, —OC(CH3)3), and the like.
In the present disclosure, “alkylthio” means that an alkyl group is connected to the remaining part of a molecule via a sulfur atom, where the alkyl group has the meaning as described in the present disclosure. Examples of alkylthio groups as a substituent include, but are not limited to, methylthio (MeS, —SCH3), ethylthio (EtS, —SCH2CH3), 1-propylthio (n-PrS, n-propylthio, —SCH2CH2CH3), 2-propylthio (i-PrS, i-propylthio, —SCH(CH3)2), and the like.
In the present disclosure, alkylsilyl refers to
wherein RG1, RG2, and RG3 are each independently alkyl; and specific examples of alkylsilyl include, but are not limited to, trimethylsilyl, triethylsilyl, tert-butyldimethylsilyl, and propyldimethylsilyl; and
In the present disclosure, arylsilyl refers to
wherein RG4, RG5, and RG6 are each independently aryl, and specific examples of arylsilyl include, but are not limited to, triphenylsilyl, diphenylsilyl, phenylsilyl, and the like, but are not limited to these.
In the present disclosure, “haloalkyl” means that an alkyl group is substituted by one or more halogen atoms, where the alkyl group has the meaning as described in the present disclosure. In one embodiment, haloalkyl with 1 to 4 carbon atoms includes fluorine-substituted alkyl with 1 to 4 carbon atoms, and such examples include, but are not limited to, trifluoromethyl, difluoromethyl, 1-fluoro-2-chloroethyl, and the like.
In the present disclosure, cycloalkyl refers to a group obtained by removing a hydrogen atom from monocyclic or polycyclic saturated cyclic hydrocarbon, and “cycloalkyl” may have one or more points of connection to the remaining part of a molecule. In some embodiments, the cycloalkyl is in a ring system containing 3 to 10 ring carbon atoms; in other embodiments, the cycloalkyl is cycloalkyl containing 5 to 10 ring carbon atoms; in other embodiments, the cycloalkyl is cycloalkyl containing 5 to 7 ring carbon atoms; and in other embodiments, the cycloalkyl is cycloalkyl containing 3 to 6 ring carbon atoms. The cycloalkyl group may be independently unsubstituted or substituted by one or more substituents described in the present disclosure. As non-limiting examples, the cycloalkyl includes cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, norbornyl, adamantyl, and the like.
In the present disclosure, cycloalkenyl refers to a group obtained by removing a hydrogen atom from monocyclic or polycyclic unsaturated cyclic olefin, and “cycloalkenyl” may have one or more points of connection to the remaining part of a molecule. In some embodiments, the cycloalkenyl is cycloalkenyl containing 2 to 10 ring carbon atoms; and in other embodiments, the cycloalkenyl is cycloalkenyl containing 5 to 10 ring carbon atoms. The cycloalkenyl group may be independently unsubstituted or substituted with one or more substituents described in the present disclosure, for example cyclohexenyl.
A “ring” in the present disclosure includes a saturated ring, i.e. cycloalkyl, and heterocycloalkyl; and an unsaturated ring, i.e. cycloalkenyl, heterocycloalkenyl, aryl and heteroaryl.
In the present disclosure, n ring atoms form a ring system, i.e. a n-membered ring. For example, phenyl is 6-membered aryl. A 5- to 10-membered aromatic ring refers to aryl or heteroaryl containing 5 to 10 ring atoms; and a 5- to 10-membered aliphatic ring refers to cycloalkyl or cycloalkenyl containing 5 to 10 ring atoms.
In the present disclosure, “5- to 13-membered aliphatic rings” include, but are not limited to, cyclopentane, cyclohexane, cycloheptane, adamantane, camphorane, and the like; “5- to 10-membered aliphatic rings” include, but are not limited to, cyclopentane, cyclohexane, cycloheptane, and adamantane; a “5- to 6-membered aliphatic ring” is, for example cyclopentane or cyclohexane; and a “5- to 13-membered aromatic ring” in the present disclosure includes, but is not limited to, a pyrrole ring, furan, thiophene, benzene, naphthalene, pyridine, quinoline, quinoxaline, fluorene, and the like, where fluorene is a 13-membered aromatic ring.
In the present disclosure, any two adjacent substituents on L1 to L3 and Ar1 to Ar3 form a ring, which means that two substituents connected to a same atom form spiro cycloalkyl, or substituents connected to adjacent atoms are connected to each other to form a fused aryl ring.
The term “optional” or “optionally” means that the subsequently described event or circumstance may occur but not have to occur, and that the description includes circumstances where the event or situation occurs or does not occur. For example, “optionally, any two adjacent substituents form a ring”, which means that the two adjacent substituents may but not have to form a ring, and this solution includes a circumstance where the two substituents are connected to each other to form a ring and a circumstance where the two substituents are present independently of each other. For example, two adjacent substituents may be present to form a saturated or unsaturated ring, or may be present independently of each other. Where two adjacent substituents connected to a same atom form a ring, the formed ring is spiro-connected to the remaining part of a molecule. Where two adjacent substituents connected to adjacent atoms form a ring, the formed ring is fused to the remaining part of a molecule.
An unpositioned connecting bond in the present disclosure refers to a single bond
extending from a ring system, which means that one end of the connecting bond can be connected with any position in the ring system through which the bond penetrates, and the other end of the connecting bond is connected with the remaining part of a compound molecule.
For example, as shown in the following formula (f), naphthyl represented by the formula (f) is connected to other positions of a molecule through two unpositioned connecting bonds penetrating a dicyclic ring, and its meaning includes any one possible connecting mode represented by formulae (f-1) to (f-10).
For another example, as shown in the following formula (X′), phenanthryl represented by the formula (X′) is connected with other positions of a molecule through one unpositioned connecting bond extending from the center of a benzene ring on one side, and its meaning includes any possible connecting mode represented by formulae (X′-1) to (X′-4).
An unpositioned substituent in the present disclosure refers to a substituent connected through a single bond extending from the center of a ring system, which means that the substituent can be connected to any possible position in the ring system. For example, as shown in the following formula (Y), a substituent R represented by the formula (Y) is connected with a quinoline ring through one unpositioned connecting bond, and its meaning includes any one possible connecting mode represented by formulae (Y-1) to (Y-7).
In the following, the meaning for unpositioned connection or unpositioned substitution is the same as that here, which will not be repeated later.
Optionally, in some embodiments, at least one of X1, X2, and X3 in the compounds of the present disclosure is N. The meaning is that any one of X1, X2, and X3 may be N, and the other two are optionally selected from C(R0) or N. Three situations that: X1 is N, and X2 and X3 are each independently C(R0) or N; X2 is N, and X1 and X3 are each independently C(R0) or N; and X3 is N, and X1 and X2 are each independently C(R0) or N are included.
Optionally, in some embodiments, at least two of X1, X2, and X3 in the compounds of the present disclosure are N. Its meaning is that any two of X1, X2, and X3 can be N, and the other is C(R0); and specifically, four situations that: X1 and X2 are N, and X3 is C(R0); X2 and X3 are N, and X1 is C(R0); X1 and X3 are N, and X2 is C(R0); and X1, X2, and X3 are all N are included.
Optionally, in some embodiments, in the compounds of the present disclosure, m1+m2+m3+q1+q2+q3 is 1, 2, or 3, and n1+n2+n3+t1+t2+t3 is 1 or 2. The number of cyano and the number of adamantyl may or may not be equal. In some embodiments, the total number of cyano substituents in the compounds of the present disclosure is selected from 1, 2, or 3, and optionally, the total number of the cyano substituents in the compounds of the present disclosure is selected from 1 or 2. In some embodiments, the total number of adamantyl substituents in the compounds of the present disclosure is selected from 1 or 2. Optionally, the total number of the adamantyl substituents in the compounds of the present disclosure is 1.
Optionally, in some embodiments, the Ar1, the Ar2, and the Ar3 are the same or different, and are each independently selected from substituted or unsubstituted aryl with 6 to 25 carbon atoms, or substituted or unsubstituted heteroaryl with 5 to 20 carbon atoms. In some embodiments, substituents in the Ar1 to Ar3 are the same or different, and are each independently selected from deuterium, a halogen group, cyano, a group A, trialkylsilyl with 3 to 8 carbon atoms, triphenylsilyl, alkyl with 1 to 4 carbon atoms, haloalkyl with 1 to 4 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, alkoxy with 1 to 4 carbon atoms, alkylthio with 1 to 4 carbon atoms, aryloxy with 6 to 15 carbon atoms, or arylthio with 6 to 15 carbon atoms; the group A is selected from substituted or unsubstituted heteroaryl with 5 to 18 carbon atoms or substituted or unsubstituted aryl with 6 to 20 carbon atoms; and substituents in the group A are selected from deuterium, a halogen group, cyano, alkyl with 1 to 4 carbon atoms, or haloalkyl with 1 to 4 carbon atoms; and optionally, any two adjacent substituents form a 5- to 10-membered aliphatic ring or a 5- to 13-membered aromatic ring.
It can be understood that any two adjacent substituents are connected to each other to form an aliphatic ring, which means that two adjacent substituents connected to a same atom are connected to each other to form a spirocyclic ring; and any two adjacent substituents are connected to each other to form an aromatic ring, which means that two adjacent substituents connected to adjacent atoms are connected to each other to form a fused ring.
In some more specific embodiments, the substituents in the Ar1 to Ar3 are the same or different, and are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl, trifluoromethyl, trimethylsilyl, methoxy, ethoxy, isopropoxy, methylthio, cyclopentyl, cyclohexyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, 9,9-dimethylfluorenyl, pyridyl, quinolyl, isoquinolyl, pyrimidinyl, carbazolyl, dibenzofuranyl, or dibenzothienyl; and optionally, any two adjacent substituents form a 5- to 6-membered aliphatic ring or a 6- to 13-membered aromatic ring.
Optionally, in some embodiments, the Ar1, the Ar2, and the Ar3 are the same or different, and are each independently selected from the group consisting of groups represented by the following formulae i-1 to i-15:
where M1 is selected from a single bond or
G1 to G5 are each independently selected from N or C(J1), and at least one of G1 to G5 is selected from N; and when two or more of G1 to G5 are selected from C(J1), any two J1 are the same or different;
G6 to G13 are each independently selected from N or C(J2), and at least one of G6 to G13 is selected from N; and when two or more of G6 to G13 are selected from C(J2), any two J2 are the same or different;
G14 to G23 are each independently selected from N or C(J3), and at least one of G14 to G23 is selected from N; and when two or more of G14 to G23 are selected from C(J3), any two J3 are the same or different;
G24 to G33 are each independently selected from N or C(J4), and at least one of G24 to G33 is selected from N; and when two or more of G24 to G33 are selected from C(J4), any two J4 are the same or different;
G34 to G37 are each independently selected from N or C(J5), and when two or more of G34 to G37 are selected from C(J5), any two J5 are the same or different;
Z1 is selected from hydrogen, deuterium, a halogen group, cyano, alkylsilyl with 3 to 8 carbon atoms, alkyl with 1 to 6 carbon atoms, haloalkyl with 1 to 6 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, alkoxy with 1 to 6 carbon atoms, alkylthio with 1 to 6 carbon atoms, or triphenylsilyl;
Z2 to Z9, and Z21 are each independently selected from hydrogen, deuterium, a halogen group, cyano, alkylsilyl with 3 to 8 carbon atoms, alkyl with 1 to 6 carbon atoms, haloalkyl with 1 to 6 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, alkoxy with 1 to 6 carbon atoms, alkylthio with 1 to 6 carbon atoms, triphenylsilyl, or heteroaryl with 3 to 18 carbon atoms;
Z10 to Z20, and J1 to J5 are each independently selected from hydrogen, deuterium, a halogen group, cyano, alkylsilyl with 3 to 8 carbon atoms, alkyl with 1 to 6 carbon atoms, haloalkyl with 1 to 6 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, alkoxy with 1 to 6 carbon atoms, alkylthio with 1 to 6 carbon atoms, triphenylsilyl, aryl with 6 to 18 carbon atoms, or heteroaryl with 3 to 18 carbon atoms; optionally, two adjacent Z19 are connected to each other to form a 5- to 10-membered aromatic ring or a 5- to 10-membered heteroaromatic ring; and optionally, two adjacent Z20 are connected to each other to form a 5- to 10-membered aromatic ring or a 5- to 10-membered heteroaromatic ring;
h1 to h21 are represented by hk, Z1 to Z21 are represented by Zk, k is a variable, and represents any integer from 1 to 21, and hk represents the number of a substituent Zk; when k is selected from 5 or 17, hk is selected from 1, 2 or 3; when k is selected from 2, 7, 8, 12, 15, 16, 18 or 21, hk is selected from 1, 2, 3 or 4; when k is selected from 1, 3, 4, 6, 9 or 14, hk is selected from 1, 2, 3, 4 or 5; when k is 13, hk is selected from 1, 2, 3, 4, 5, or 6; when k is selected from 10 or 19, hk is selected from 1, 2, 3, 4, 5, 6 or 7; when k is 20, hk is selected from 1, 2, 3, 4, 5, 6, 7, or 8; when k is 11, hk is selected from 1, 2, 3, 4, 5, 6, 7, 8 or 9; and when hk is greater than 1, any two Zk are the same or different;
K1 is selected from O, S, N(Z22), C(Z23Z24), or Si(Z23Z24); where Z22, Z23, and Z24 are each independently selected from aryl with 6 to 18 carbon atoms, heteroaryl with 3 to 18 carbon atoms, alkyl with 1 to 6 carbon atoms or cycloalkyl with 5 to 10 carbon atoms; or the Z23 and the Z24 are connected to each other to form a saturated or unsaturated ring with 5 to 13 carbon atoms together with the atoms to which they are jointly connected; and
K2 is selected from a single bond, O, S, N(Z25), C(Z26Z27), or Si(Z26Z27); where Z25, Z26, and Z27 are each independently selected from aryl with 6 to 18 carbon atoms, heteroaryl with 3 to 18 carbon atoms, alkyl with 1 to 6 carbon atoms, or cycloalkyl with 5 to 10 carbon atoms, or the Z26 and the Z27 are connected to each other to form a saturated or unsaturated ring with 5 to 13 carbon atoms together with the atoms to which they are jointly connected.
For example, in
when K2 is a single bond, M1 is a single bond, G34 to G37 are C(H), Z19 is hydrogen, and K1 is selected from C(Z23Z24), and when Z23 and Z24 form a ring, the ring can be a 5-membered ring, for example
Of course, the number of carbon atoms on the ring formed by connecting the two substituents Z23 and Z24 to each other can also be other values, which will not be listed here.
The ring formed by connecting Z26 and Z27 to each other is similar to that of the Z23 and the Z24, which will not be repeated here.
Optionally, in some embodiments, Ar1, Ar2, and Ar3 are the same or different, and are each independently selected from a substituted or unsubstituted group V, and the unsubstituted group V is selected from the group consisting of:
the substituted group V has one or two or more substituents, and the substituents are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl, trifluoromethyl, trimethylsilyl, alkoxy with 1 to 4 carbon atoms, alkylthio with 1 to 4 carbon atoms, cyclopentyl, cyclohexyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, 9,9-dimethylfluorenyl, pyridyl, quinolyl, isoquinolyl, pyrimidinyl, carbazolyl, dibenzofuranyl, or dibenzothienyl.
Optionally, in other embodiments, Ar1, Ar2, and Ar3 are the same or different, and are each independently selected from a substituted or unsubstituted group V′, and the unsubstituted group V′ is selected from the group consisting of:
the substituted group V′ has one or two or more substituents, and the substituents are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl, trifluoromethyl, trimethylsilyl, alkoxy with 1 to 4 carbon atoms, alkylthio with 1 to 4 carbon atoms, cyclopentyl, cyclohexyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, 9,9-dimethylfluorenyl, pyridyl, quinolyl, isoquinolyl, pyrimidinyl, carbazolyl, dibenzofuranyl, or dibenzothienyl.
Optionally, in some embodiments, the Ar1, the Ar2, and the Ar3 are each independently selected from substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted fluorenyl, substituted or unsubstituted quinolyl, substituted or unsubstituted isoquinolyl, substituted or unsubstituted carbazolyl, substituted or unsubstituted dibenzothienyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted azadibenzothienyl, substituted or unsubstituted azadibenzofuranyl, substituted or unsubstituted azacarbazolyl, substituted or unsubstituted phenanthryl, substituted or unsubstituted anthryl, substituted or unsubstituted spirobifluorenyl, substituted or unsubstituted benzofuro[3,2-b]pyridyl, substituted or unsubstituted phenoxytheophyllinyl, substituted or unsubstituted phenothiazinyl, substituted or unsubstituted phenoxazinyl, substituted or unsubstituted spiro[cyclopentane-1,9′-fluorenyl], substituted or unsubstituted spiro[cyclohexane-1,9′-fluorenyl], substituted or unsubstituted 9H-9-silafluorenyl, or a group formed by linking two or three of the above groups by a single bond; and substituents in Ar1, Ar2, and Ar3 are the same as or different from each other, and are each independently selected from the group consisting of deuterium, fluorine, chlorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl, methoxy, ethoxy, trifluoromethyl, trimethylsilyl, phenyl, biphenyl, naphthyl, pyridyl, carbazolyl, dibenzofuranyl, and dibenzothienyl.
Optionally, in some embodiments, the Ar1, the Ar2, and the Ar3 are the same or different, and are each independently selected from the group consisting of:
Optionally, in other embodiments, the Ar1, the Ar2, and the Ar3 are the same or different, and are each independently selected from the group consisting of:
Optionally, in some embodiments, the L1, the L2, and the L3 are the same or different, and are each independently selected from a single bond or selected from the group consisting of groups represented by formulae j-1 to j-14:
where M2 is selected from a single bond or
Q1 to Q5 are each independently selected from N or C(J5), and at least one of Q1 to Q5 is selected from N; and when two or more of Q1 to Q5 are selected from C(J5), any two J5 are the same or different;
Q6 to Q13 are each independently selected from N or C(J6), and at least one of Q6 to Q13 is selected from N; and when two or more of Q6 to Q13 are selected from C(J6), any two J6 are the same or different;
Q14 to Q23 are each independently selected from N, C or C(J7), and at least one of Q14 to Q23 is selected from N; and when two or more of Q14 to Q23 are selected from C(J7), any two J7 are the same or different;
Q24 to Q33 are each independently selected from N, C or C(J8), and at least one of Q24-Q33 is selected from N; and when two or more of Q24 to Q33 are selected from C(J8), any two J8 are the same or different;
E1 to E14, and J5 to J8 are each independently selected from: hydrogen, deuterium, a halogen group, cyano, heteroaryl with 3 to 20 carbon atoms, aryl with 6 to 20 carbon atoms, alkylsilyl with 3 to 8 carbon atoms, triphenylsilyl, alkyl with 1 to 6 carbon atoms, haloalkyl with 1 to 6 carbon atoms, alkenyl with 2 to 6 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, heterocycloalkyl with 2 to 6 carbon atoms, alkoxy with 1 to 6 carbon atoms, alkylthio with 1 to 6 carbon atoms, aryloxy with 6 to 18 carbon atoms, or arylthio with 6 to 18 carbon atoms;
e1 to e14 are represented by er, E1 to E14 are represented by Er, r is a variable, and represents any integer from 1 to 14, and er represents the number of a substituent Er; when r is selected from 1, 2, 3, 4, 5, 6, 13 or 14, er is selected from 1, 2, 3 or 4; when r is selected from 7 or 11, er is selected from 1, 2, 3, 4, 5 or 6; when r is 9 or 12, er is selected from 1, 2, 3, 4, 5, 6, or 7; when r is selected from 8 or 10, er is selected from 1, 2, 3, 4, 5, 6, 7, or 8; and when er is greater than 1, any two Er are the same or different;
K3 is selected from O, S, Se, N(E15), C(E16E17), or Si(E18E19); where E15, E16, E17, E18, and E19 are each independently selected from hydrogen, aryl with 6 to 20 carbon atoms, heteroaryl with 3 to 20 carbon atoms, alkyl with 1 to 6 carbon atoms, alkenyl with 2 to 6 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, or heterocycloalkyl with 2 to 6 carbon atoms;
or, optionally, the E16 and the E17 are connected to each other to form a 5- to 13-membered aliphatic ring or a 5- to 13-membered aromatic ring together with the atoms to which they are jointly connected;
or, optionally, the E18 and the E19 are connected to each other to form a 5- to 13-membered aliphatic ring or a 5- to 13-membered aromatic ring together with the atoms to which they are jointly connected;
each K4 is independently selected from a single bond, O, S, Se, N(E20), C(E21E22), or Si(E23E24); where E20, E21, E22, E23, and E24 are each independently selected from hydrogen, aryl with 6 to 20 carbon atoms, heteroaryl with 3 to 20 carbon atoms, alkyl with 1 to 6 carbon atoms, alkenyl with 2 to 6 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, or heterocycloalkyl with 2 to 10 carbon atoms;
or, optionally, the E21 and the E22 are connected to each other to form a 5- to 13-membered aliphatic ring or a 5- to 13-membered aromatic ring together with the atoms to which they are jointly connected;
or, optionally, the E23 and the E24 are connected to each other to form a 5- to 13-membered aliphatic ring or a 5- to 13-membered aromatic ring together with the atoms to which they are jointly connected.
Optionally, in some embodiments, the L1, the L2, and the L3 are the same or different, and are each independently selected from a single bond, substituted or unsubstituted arylene with 6 to 20 carbon atoms, or substituted or unsubstituted heteroarylene with 5 to 18 carbon atoms. In some embodiments, substituents in L1, L2, and L3 are the same or different, and are each independently selected from deuterium, a halogen group, cyano, a group A, trialkylsilyl with 3 to 8 carbon atoms, triphenylsilyl, alkyl with 1 to 4 carbon atoms, haloalkyl with 1 to 4 carbon atoms, cycloalkyl with 5 to 10 carbon atoms, alkoxy with 1 to 4 carbon atoms, alkylthio with 1 to 4 carbon atoms, aryloxy with 6 to 15 carbon atoms, or arylthio with 6 to 15 carbon atoms; the group A is selected from substituted or unsubstituted heteroaryl with 5 to 12 carbon atoms or substituted or unsubstituted aryl with 6 to 15 carbon atoms, and substituents in the group A are selected from deuterium, a halogen group, cyano, alkyl with 1 to 4 carbon atoms, or haloalkyl with 1 to 4 carbon atoms; and optionally, any two adjacent substituents form a 5- to 10-membered aliphatic ring or a 5- to 13-membered aromatic ring.
In some more specific embodiments, the substituents in the L1, the L2, and the L3 are the same or different, and are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl, trifluoromethyl, trimethylsilyl, methoxy, ethoxy, isopropoxy, methylthio, cyclopentyl, cyclohexyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, 9,9-dimethylfluorenyl, pyridyl, quinolyl, isoquinolyl, pyrimidinyl, carbazolyl, dibenzofuranyl, or dibenzothienyl; and optionally, any two adjacent substituents form a 5- to 6-membered aliphatic ring or a 6- to 13-membered aromatic ring.
Optionally, in some embodiments, L1, L2, and L3 are the same or different, and are each independently selected from a single bond, and a substituted or unsubstituted group W, and the unsubstituted group W is selected from the group consisting of:
when the group W is substituted with one or more substituents, the substituents in the group W are each independently selected from the group consisting of deuterium, fluorine, chlorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl, alkoxy with 1 to 4 carbon atoms, trifluoromethyl, trimethylsilyl, cyclopentyl, cyclohexyl, phenyl, biphenyl, naphthyl, fluorenyl, 9,9-dimethylfluorenyl, pyridyl, quinolyl, isoquinolyl, pyrimidinyl, dibenzofuranyl, dibenzothienyl, and carbazolyl; and when the number of the substituents in the group W is more than 1, the substituents are the same or different.
Optionally, in some embodiments, the L1, the L2, and the L3 are the same or different, and are each independently selected from a single bond, substituted or unsubstituted phenylene, substituted or unsubstituted biphenylene, substituted or unsubstituted terphenylene, substituted or unsubstituted naphthylene, substituted or unsubstituted fluorenylene, substituted or unsubstituted spiro[cyclopentane-1,9′-fluorenylene], substituted or unsubstituted spiro[cyclohexane-1,9′-fluorenylene], substituted or unsubstituted phenanthrolinylene, substituted or unsubstituted quinolylene, substituted or unsubstituted pyridylene, substituted or unsubstituted isoquinolylene, substituted or unsubstituted carbazolylene, substituted or unsubstituted dibenzothienylene, substituted or unsubstituted dibenzofurylene, substituted or unsubstituted phenanthrylene, substituted or unsubstituted anthrylene, or substituted or unsubstituted benzophenanthrylene, or is a group formed by connecting two or three of the above subunit groups by a single bond; and substituents in L1, L2, and L3 are the same as or different from each other, and are each independently selected from the group consisting of deuterium, fluorine, chlorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl, methoxy, ethoxy, trifluoromethyl, trimethylsilyl, phenyl, biphenyl, naphthyl, pyridyl, carbazolyl, dibenzofuranyl, and dibenzothienyl.
Optionally, in some embodiments, L1 and L2 are the same or different, and are each independently selected from a single bond or from the group consisting of:
Optionally, in some embodiments, L3 is selected from a single bond or the group consisting of:
Optionally, in some embodiments, at least two of X1, X2, and X3 are N, and at least one cyano and at least one adamantyl are connected to Y1, Y2, and Y3 in total.
Optionally, in some more specific embodiments, Y1 and Y2 are each independently selected from the group consisting of:
Optionally, in some more specific embodiments, Y3 is selected from the group consisting of:
Optionally, in some embodiments, Y3 is connected to at least one cyano, i.e., m3+q3≥1, and/or Y3 is connected to at least one adamantyl, i.e., n3+t3≥1.
Optionally, in some embodiments, the nitrogen-containing compound is selected from the group consisting of the following compounds:
In the following, the present disclosure will be described in detail with reference to the examples. However, the examples according to this description may be modified to various other forms, and the scope of this description is not to be construed as limited to the examples described below. The examples of the description are provided in order to more fully describe the description to those skilled in the art.
In the synthesis examples described below, unless otherwise stated, all temperatures are in degrees Celsius. Some reagents were purchased from commercial suppliers such as Aldrich Chemical Company, Arco Chemical Company and Alfa Chemical Company and were used without further purification unless otherwise stated. Anhydrous tetrahydrofuran, dioxane, toluene, and diethyl ether were dried over metal sodium under reflux. Anhydrous dichloromethane and chloroform were dried over calcium hydride under reflux. Ethyl acetate, petroleum ether, n-hexane, N,N-dimethylacetamide and N,N-dimethylformamide were dried over anhydrous sodium sulfate in advance before use.
The following reactions were generally carried out under a positive pressure of nitrogen or argon or a drying tube sleeved anhydrous solvent (unless otherwise indicated), reaction flasks are plugged with suitable rubber stoppers, and a substrate was injected through a syringe. Glassware was dried.
During purification, a chromatographic column was a silica gel column and silica gel (100-200-mesh) was purchased from the Qingdao Ocean Chemical Factory.
In the synthesis examples, low resolution mass spectrum (MS) data were measured by using Agilent 6120 Quadrupole HPLC-M (column model: Zorbax SB-C18, 2.1×30 mm, 3.5 μm, 6 min at a flow rate of 0.6 mL/min. Mobile phase: 5% to 95% (a ratio of acetonitrile containing 0.1% formic acid in water containing 0.1% formic acid) using electrospray ionization (ESI) at 210 nm/254 nm with UV detection.
1H NMR spectroscopy: Bruker 400 MHz Nuclear Magnetic Resonance Spectrometer, with CDCl3 or CD2Cl2 as a solvent (in ppm) and TMS (0 ppm) as a reference standard at room temperature. When multiplets appear, the following abbreviations will be used: s (singlet), d (doublet), t (triplet), and m (multiplet).
Target compounds were detected by UV at 210 nm/254 nm by using Agilent 1260 pre-HPLC or Calesep pump 250 pre-HPLC (column model: NOVASEP 50/80 mm DAC).
Synthesis of Sub 2-B1
1-Adamantanol (50.00 g, 328.45 mmol), 3-hydroxybenzonitrile (39.12 g, 328.45 mmol), and dichloromethane (500 mL) were added to a round bottom flask, and cooled to −5° C. under nitrogen atmosphere, trifluoromethanesulfonic acid (73.93 g, 492.67 mmol) was added dropwise at −5° C., and the reaction mixture was stirred for 3 h a the same temperature; the reaction solution was washed with deionized water (300 mL) to pH=7, and extracted with dichloromethane (100 mL), the organic phases were mixed, the combined organic phases were dried over anhydrous magnesium sulfate, and filtered, and then concentrated in a vacuum to obtain a crude product; and the obtained crude product was purified by silica gel column chromatography using n-heptane as a mobile phase to obtain an intermediate Sub 2-1-B1 (33.28 g, yield: 40.00%) as a white solid.
The white solid intermediate Sub 2-I-B1 (33.28 g) was added to a flask, potassium acetate was added, the mixture was dissolved with DCM, trifluoromethanesulfonic anhydride was added dropwise at room temperature, after the dropwise addition, pyridine was added; stirring was performed for 5 h, the reaction solution was washed with deionized water (300 mL) to pH=7, and extracted with dichloromethane (100 mL), the organic phases were mixed, and the combined organic phases were dried over anhydrous magnesium sulfate, and then filtered, and then concentrated in a vacuum to obtain a crude product; and the obtained crude product was purified by recrystallization using dichloromethane and n-heptane to obtain Sub 2-B1 (32.9 g, yield: 65%) as a white solid.
Synthesis of Compound 3
2-Chloro-4,6-diphenyl-1,3,5-triazine (5.36 g, 20.00 mmol), Sub 2-B1 (7.71 g, 20.00 mmol), tetrakis(triphenylphosphine)palladium (0.23 g, 0.20 mmol), potassium carbonate (5.57 g, 40.07 mmol), tetrabutylammonium chloride (0.64 g, 2.00 mmol), toluene (87 mL), ethanol (18 mL) and deionized water (18 mL) were added to a three-necked flask, the mixture was heated to 75° C. to 80° C. under nitrogen atmosphere, and stirred under heating and reflux for 8 h. After the reaction was completed, the reaction solution was cooled to room temperature, and extracted with toluene (100 mL), the organic phases were mixed, and the combined organic layers were dried over anhydrous magnesium sulfate, filtered and concentrated in a vacuum to obtain a crude product; and the crude product was purified by silica gel column chromatography to obtain a compound 3 (7.51 g, yield: 80%) as a solid. MS (ESI, pos.ion) m/z: 469.23 [M+H]+.
A compound 14 was prepared in the same manner as that in Preparation example 1, except that 2-(4-biphenyl)-4-chloro-6-phenyl-1,3,5-triazine (6.50 g, 20.00 mmol) was used instead of 2-chloro-4,6-diphenyl-1,3,5-triazine in Preparation example 1 to obtain the compound 14 (7.72 g, yield: 75%). MS (ESI, pos.ion) m/z: 545.26 [M+H]+.
Preparation of Intermediates
<1. Synthesis of Sub 1-A1>
<Reaction Scheme 1>
1> Synthesis of Sub 1-I-A1
Under nitrogen atmosphere, magnesium sheet (3.16 g, 131.85 mmol) and 30 ml of a solution of tetrahydrofuran were added into a three-necked flask, the system temperature was raised to 60° C., and iodine (0.55 g, 2.19 mmol) was added to the system. A compound 4-bromobenzonitrile (20.0 g, 109.87 mmol) was completely dissolved in 30 ml of a solution of THF, and slowly added dropwise to the system within 30 min while the temperature to be 60° C. After the dropwise addition, the reaction was stirred at 60° C. for 2 h. 2,4-Dichloro-6-phenyl-1,3,5-triazine (24.83 g, 109.87 mmol) dissolved in 80 ml of THF was added dropwise to the mixed solution after cooling at room temperature, and the reaction was completed after stirring for 3 h. After the reaction was completed, the reaction solution was extracted with toluene (200 mL), the organic phases were mixed, and the combined organic layer was dried over anhydrous magnesium sulfate, filtered and concentrated by distillation in a vacuum to obtain a crude product; and the crude product was purified by silica gel column chromatography, recrystallized, and filtered to obtain an intermediate sub 1-I-A1 (20.58 g, yield: 64%) as a solid.
2> Synthesis of Sub 1-II-A1
Sub 1-I-A1 (20.00 g, 68.32 mmol), p-chlorophenylboronic acid (10.89 g, 69.68 mmol), tetrakis(triphenylphosphine)palladium (1.57 g, 1.36 mmol), potassium carbonate (18.89 g, 136.64 mmol), tetrabutylammonium bromide (0.44 g, 1.36 mmol), toluene (160 mL), ethanol (80 mL) and deionized water (40 mL) were added to a three-necked flask, the mixture was heated to 78° C. under nitrogen protection, and stirred under heating and reflux for 8 h. After the reaction was completed, the reaction solution was cooled to room temperature, and extracted with toluene (200 mL), the organic phases were mixed, and the combined organic layer was dried over anhydrous magnesium sulfate, filtered and concentrated to obtain a crude product; and the crude product was purified by silica gel column chromatography to give an intermediate sub 1-II-A1 (16.87 g, yield: 67%) as a solid.
3> Synthesis of Sub 1-A1
Sub 1-II-A1 (15.00 g, 40.67 mmol), bis(pinacolato)diboron (15.49 g, 61.00 mmol), Pd2(dba)3 (0.37 g, 0.40 mmol), X-phos (0.38 g, 0.81 mmol), and KOAc (7.81 g, 81.34 mmol) were added to 1,4-dioxane (150 mL), and a reaction was carried out under reflux at 80° C. for 12 h. When the reaction was complete, extraction was performed with CH2Cl2 and water. An obtained organic layer was dried over MgSO4 and concentrated, and the obtained compound was allowed to pass through a silica gel column, and recrystallized to obtain an intermediate sub 1-A1 (12.16 g, yield: 65%) as a solid.
Intermediates sub 1-A2 to sub 1-A17 were prepared in the same manner as that of sub 1-A1, except that a raw material 1 was used instead of 2-phenyl-4,6-dichloro-1,3,5-triazine in the synthesis of the intermediate sub 1-I-A1, a raw material 2 was used instead of 4-bromobenzonitrile in the synthesis of sub 1-I-A1 in Preparation example 1, and a raw material 3 was used instead of p-chlorophenylboronic acid in the synthesis of sub 1-II-A1 in Preparation example 1.
TABLE 1 | |||||
Interme- | Raw | Raw | Raw | Yield/ | |
diate | material 1 | material 2 | material 3 | Sub 1-A | % |
Sub 1-A2 |
|
|
|
|
54 |
Sub 1-A3 |
|
|
|
|
61 |
Sub 1-A4 |
|
|
|
|
62 |
Sub 1-A5 |
|
|
|
|
54 |
Sub 1-A6 |
|
|
|
|
56 |
Sub 1-A7 |
|
|
|
|
66 |
Sub 1-A9 |
|
|
|
|
52 |
Sub 1-A10 |
|
|
|
|
64 |
Sub 1-A11 |
|
|
|
|
55 |
Sub 1-A12 |
|
|
|
|
63 |
Sub 1-A13 |
|
|
|
|
57 |
Sub 1-A14 |
|
|
|
|
61 |
Sub 1-A15 |
|
|
|
|
59 |
Sub 1-A16 |
|
|
|
|
54 |
Sub 1-A17 |
|
|
|
|
50 |
Preparation method for some of raw materials in Table 1:
Bromobenzene (110 g, 0.72 mol) and 1-adamantanol (106 g, 0.72 mol) were added to a round bottom flask, and dissolved with 1.0 L of DCM to be clear, the obtained solution was cooled to 0° C. to 5° C., trifluoromethanesulfonic anhydride (162.65 g, 1.08 mol) was added dropwise, and the mixture was stirred for 3 h while heat preservation; after the reaction was completed, the reaction solution was washed with deionized water (1.0 L/time) to pH=7, liquid separation was performed, drying was performed by using anhydrous magnesium sulfate, filtering was performed, and the concentration was performed in a vacuum to obtain a crude product; and the obtained crude product was purified by silica gel column chromatography using n-heptane as a mobile phase to obtain 97 g of an intermediate a-1 as a white solid, with a purity of 99.8%, and a yield of 47.6%.
Intermediates b-1 to c-1 were prepared in the same manner as that of the intermediate a-1, except that a raw material 4 in Table 2 below was used instead of the preparation raw material bromobenzene.
The intermediate sub 1-A1 (10.00 g, 21.72 mmol), a-1 (6.32 g, 21.72 mmol), tetrakis(triphenylphosphine)palladium (0.50 g, 0.43 mmol), potassium carbonate (6.00 g, 43.44 mmol), tetrabutylammonium bromide (0.07 g, 0.21 mmol), toluene (80 mL), ethanol (40 mL) and deionized water (20 mL) were added to a three-necked flask, heated to 78° C. under nitrogen atmosphere, and stirred under heating and reflux for 15 h. After the reaction was completed, the reaction solution was cooled to room temperature, and extracted with toluene (100 mL), the organic phases were mixed, and the combined organic layer was dried over anhydrous magnesium sulfate, filtered and concentrated; and a crude product was purified by silica gel column chromatography to obtain a compound 46 (6.70 g, yield: 57%) as a solid. MS (ESI, pos.ion) m/z: 545.26 [M+H]+.
NMR data for the compound 46: 1H NMR (400 MHZ, CD2Cl2) δ (ppm): 8.90 (d, 2H), 8.81 (d, 2H), 8.75 (d, 2H), 7.90 (d, 2H), 7.85 (d, 2H), 7.65-7.58 (m, 3H), 7.36-7.30 (m, 4H), 2.19 (s, 3H), 1.96 (s, 6H), 1.86-1.73 (m, 6H).
Compounds shown in Table 3 below were synthesized in a similar manner to that in preparation example 3 except that intermediates sub 1-A2 to sub 1-A17 were used instead of the intermediate sub 1-A1, and the intermediate a-1 was replaced by the following raw material 5:
TABLE 3 | |||||
Prep- | |||||
ara- | |||||
tion | Mass | ||||
exam- | Raw | spec- | |||
ple | Sub 1-A | material 5 | Compound | Yield | trum |
4 |
|
|
|
60 | 595.28 |
5 |
|
|
|
62 | 545.26 |
6 |
|
|
|
64 | 747.34 |
7 |
|
|
|
55 | 645.29 |
8 |
|
|
|
57 | 697.33 |
9 |
|
|
|
53 | 620.27 |
10 |
|
|
|
66 | 646.29 |
11 |
|
|
|
54 | 596.27 |
12 |
|
|
|
69 | 722.32 |
13 |
|
|
|
61 | 619.28 |
14 |
|
|
|
59 | 635.27 |
15 |
|
|
|
64 | 710.32 |
16 |
|
|
|
52 | 785.36 |
17 |
|
|
|
59 | 710.32 |
18 |
|
|
|
61 | 696.30 |
19 |
|
|
|
59 | 679.37 |
20 |
|
|
|
56 | 704.37 |
21 |
|
|
|
53 | 813.39 |
22 |
|
|
|
51 | 797.36 |
NMR data for some of the compounds in Table 3 above are shown in Table 4 below:
TABLE 4 | ||
Compound | NMR data | |
No. | Compound structure | 1H NMR (400 MHz, CD2Cl2) |
483 |
|
δ (ppm): 8.99 (s, 2H), 8.84 (d, 2H), 8.75 (d, 2H), 7.92 (d, 4H), 7.75-7.62 (m, 8H), 7.47 (d, 2H), 2.18 (s, 3H), 1.95 (s, 6H), 1.81-1.75 (m, 6H) |
63 |
|
δ (ppm): 8.95 (d, 2H), 8.87 (d, 2H), 8.79 (d, 2H), 8.23 (d, 1H), 8.16 (d, 2H), 8.00 (d, 2H), 7.90 (d, 1H), 7.71 (d, 1H), 7.66-7.56 (m, 3H), 7.42 (t, 1H), 7.34 (t, 1H), 7.06 (d, 1H), 2.21 (s, 3H), 1.93 (s, 6H), 1.81-1.75 (m, 6H) |
The intermediate a-1 (35.0 g, 120.1 mmol) was added to a round bottom flask, 630 mL of dry THF was added to the flask, and the system was cooled to −80° C. to −90° C. with liquid nitrogen, then n-butyllithium (8.46 g, 132.1 mmol) was added dropwise, and the reaction mixture was stirred for 1 h after dropwise addition. Trimethyl borate (13.7 g, 14.7 mL, 132.1 mmol) was added dropwise at the same temperature, after dropwise addition, the resulted mixture was stirred at −80° C. to −90° C. for 1 h, then naturally heated to room temperature, the reaction was completed. 100 mL of an aqueous solution of HCl (a concentration of 2 mol/L) was added, and stirring was performed for 0.5 h. Dichloromethane and water were added for extraction, an organic phase was washed to be neutral pH=7, the obtained organic phases were mixed, the combined organic phases was dried over anhydrous MgSO4 for 10 min, and filtered, and the filtrate was concentrated in a vacuum, and stirred with n-heptane twice to obtain an intermediate a-1-1 (20.9 g, yield: 68%) as a white solid.
The intermediate a-1-1 (19.5 g, 76.1 mmol), 9,10-dibromoanthracene (32.0 g, 95.2 mmol), tetrakis(triphenylphosphine)palladium (2.2 g, 1.9 mmol), potassium carbonate (26.3 g, 190.4 mmol), tetrabutylammonium bromide (0.3 g, 0.9 mmol), toluene (250 mL), ethanol (60 mL), and deionized water (60 mL) were added to a three-necked flask, heated to 76° C. under nitrogen atmosphere, and stirred under heating and reflux for 15 h. After the reaction was completed, the solution was cooled to room temperature, the reaction solution was extracted with toluene and water, the organic phases were mixed, and the combined organic layer was dried over anhydrous magnesium sulfate, filtered, and concentrated to obtain a crude product; and the crude product was purified by silica gel column chromatography to obtain an intermediate a-1-2 (19.5 g, yield: 55%) as a solid.
The intermediate a-1-2 (24.0 g, 51.3 mmol), bis(pinacolato)diboron (19.5 g, 77.0 mmol), Pd(dppf)Cl2 (0.7 g, 1.0 mmol), and KOAc (10.0 g, 102.6 mmol) were added into 1,4-dioxane (200 mL), and a reaction was carried out under reflux at 80° C. for 12 h. When the reaction was completed, the reaction solution was cooled to room temperature, and extracted with CH2Cl2 and water. The separated organic phase was dried over MgSO4, the obtained organic layer was concentrated to obtained a residue, and the residue was subjected to silica gel column chromatography to obtain an intermediate a-1-3 (16.1 g, yield: 61%).
The intermediate a-1-3 (14.6 g, 28.4 mmol), 3′-(4-chloro-6-phenyl-1,3,5-triazin-2-yl)-[1,1′-biphenyl]-4-carbonitrile (10.0 g, 27.1 mmol), tetrakis(triphenylphosphine)palladium (0.6 g, 0.5 mmol), potassium carbonate (7.5 g, 54.2 mmol), tetrabutylammonium bromide (0.2 g, 0.6 mmol), toluene (120 mL), ethanol (30 mL) and deionized water (30 mL) were added to a three-necked flask, heated to 76° C. under nitrogen atmosphere, and stirred under heating and reflux for 15 h. After the reaction was completed, the solution was cooled to room temperature, the reaction solution was extracted with toluene and water, the organic phases were mixed, and the combined organic layer was dried over anhydrous magnesium sulfate, filtered, and concentrated to obtain a crude product; and crude product was purified by silica gel column chromatography to obtain a compound 591 (13.1 g, yield: 67%) as a solid.
MS (ESI, pos.ion) m/z: 721.33 [M+H]+.
Under nitrogen atmosphere, magnesium sheet (2.9 g, 120.9 mmol) and 30 mL of tetrahydrofuran (THF) were added into a three-necked flask, the system temperature was raised to 80° C., iodine (0.6 g, 2.4 mmol) was added to the solution, 8-bromobenzofuro[2,3-B]pyridine (30.0 g, 120.9 mmol) was dissolved completely in 30 mL of THF solvent, and slowly added dropwise to the solution within 30 min while the temperature was kept at 80° C. After the dropwise addition was complete, a reaction was carried out under stirring at 80° C. for 2 h to obtain a mixed solution. After cooling at room temperature, 2,4,6-trichloro-1,3,5-triazine (22.3 g, 120 mmol) dissolved in 80 mL of THF was added dropwise to the mixed solution, and after stirring for 3 h, the reaction was completed After the reaction was completed, the reaction solution was extracted with toluene (200 mL), the organic phases were mixed, and the combined organic layer was dried over anhydrous magnesium sulfate, filtered and concentrated in a vacuum to obtain a crude product; and the crude product was purified by silica gel column chromatography, recrystallized with methanol, and filtered to obtain an intermediate a-2-1 (22.6 g, yield:59%) as a solid.
Under nitrogen atmosphere, magnesium sheet (1.6 g, 69.3 mmol) and 10 mL of tetrahydrofuran (THF) were added into a three-necked flask, the mixture was heated to 80° C., iodine (0.3 g, 1.4 mmol) was added to the mixture, b-1 (30.0 g, 120.9 mmol) was dissolved completely in 15 mL of THF solvent, and slowly added dropwise to the mixture within 30 min while the temperature was kept at 80° C. After the dropwise addition was complete, a reaction was carried out under stirring at 80° C. for 2 h to obtain a mixed solution. After cooling at room temperature, a-I-1 (22.0 g, 69.3 mmol) dissolved in 50 mL of THF was added dropwise to the mixed solution, and after stirring for 3 h, the reaction was completed. After the reaction was completed, the reaction solution was extracted with toluene (200 mL), the organic phases were mixed, and the combined organic layer was dried over anhydrous magnesium sulfate, filtered and concentrated in a vacuum to obtain a crude product; and the crude product was purified by silica gel column chromatography, recrystallized with methanol, and filtered to obtain an intermediate a-2-2 (21.3 g, yield:54%) as a solid.
The intermediate a-2-2 (21.0 g, 6.8 mmol), 4-cyano-4-biphenylboronic acid (8.4 g, 37.6 mmol), tetrakis(triphenylphosphine)palladium (0.8 g, 0.7 mmol), potassium carbonate (10.1 g, 73.7 mmol), tetrabutylammonium bromide (0.12 g, 0.37 mmol), toluene (160 mL), ethanol (80 mL) and deionized water (40 mL) were added to a three-necked flask, the mixture was heated to reflux at 76° C. under nitrogen atmosphere, and stirred for 15 h. After the reaction was completed, the solution was cooled to room temperature, the reaction solution was extracted with toluene and water, the organic phases were mixed, and the combined organic layer was dried over anhydrous magnesium sulfate, filtered, and concentrated; and a crude product was purified by silica gel column chromatography to obtain a compound 590 (17.0 g, yield:65%) as a solid. MS (ESI, pos.ion) m/z: 712.30 [M+H]+.
a compound 55, a compound 81, a compound 216, a compound 570, a compound 577, a compound 598 and a compound 619 were also prepared by using purchased intermediates as raw materials by reference to the preparation methods and operation processes of the above compounds.
the compound 55 was synthesized by reference to the process for the preparation of the compound 63 to obtain the compound 55 (5.70 g) as a solid. MS (ESI, pos.ion) m/z: 520.18 [M+H]+.
the compound 81 was synthesized by reference to the process for the preparation of the compound 63 to obtain the compound 81 (5.50 g) as a solid. MS (ESI, pos.ion) m/z: 695.28 [M+H]+.
the compound 216 was synthesized by referring to the process for the preparation of the compound 483 to obtain the compound 216 (3.70 g) as a solid. MS (ESI, pos.ion) m/z: 575.13 [M+H]+.
the compound 570 was synthesized by reference to the process for the preparation of compound 482 to obtain the compound 570 (5.35 g) as a solid. MS (ESI, pos.ion) m/z: 549.25 [M+H]+.
the compound 577 was synthesized by reference to the process for the preparation of the compound 30 to obtain the compound 577 (8.45 g) as a solid. MS (ESI, pos.ion) m/z: 667.25 [M+H]+.
the compound 598 was synthesized by reference to the process for the preparation of the compound 483 to obtain the compound 598 (5.80 g) as a solid. MS (ESI, pos.ion) m/z: 710.32 [M+H]+.
the compound 619 was synthesized by reference to the process for the preparation of the compound 483 to obtain the compound 619 (8.27 g) as a solid. MS (ESI, pos.ion) m/z: 721.33 [M+H]+.
Embodiments of the present disclosure also provide an organic electroluminescent device, including an anode, a cathode and a functional layer between the anode and the cathode, and the functional layer includes the above nitrogen-containing compound of the present disclosure.
In one specific embodiment, the functional layer includes an electron transport layer including the nitrogen-containing compound of the present disclosure. When the nitrogen-containing compound of the present disclosure is used as an electron transport layer material of an electronic element, the efficiency, and service life of the device can be improved, and the operating voltage can be reduced.
In one specific embodiment, the electronic element may be an organic electroluminescent device. As shown in FIG. 1 , the organic electroluminescent device may include an anode 100, a hole transport layer 320, an electron blocking layer 322, an organic luminescence layer 330 as an energy conversion layer, a hole blocking layer 341, an electron transport layer 340, and a cathode 200 which are sequentially stacked. The hole transport layer 320, the electron blocking layer 322, the organic luminescence layer 330 as the energy conversion layer, the hole blocking layer 341, and the electron transport layer 340 together constitute the functional layer 300.
Optionally, the anode 100 includes an anode material, which is preferably a material with a large work function that facilitates hole injection into the functional layer. Specific examples of the anode material include metals such as nickel, platinum, vanadium, chromium, copper, zinc, and gold, or their alloys; metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO) and indium zinc oxide (IZO); combined metals and oxides, such as ZnO:Al or SnO2:Sb; or a conductive polymer such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene] (PEDT), polypyrrole, and polyaniline, but are not limited to these. A transparent electrode containing indium tin oxide (ITO) as the anode is preferably included.
Optionally, the hole transport layer 320 and the electron blocking layer 322 each include one or more hole transport materials, and the hole transport materials may be selected from a carbazole polymer, carbazole-linked triarylamine compounds, or other types of compounds, which are not particularly limited in the present disclosure. For example, the hole transport layer 320 may be composed of a compound NPB or a compound HT-01, and the electron blocking layer 322 may include a compound EB-01 or TCTA.
Optionally, the organic luminescence layer 330 may be composed of a single luminescence material, and may also include a host material and a doping material. Optionally, the organic luminescence layer 330 is composed of the host material and the doping material, and holes injected into the organic luminescence layer 330 and electrons injected into the organic luminescence layer 330 can be recombined in the organic luminescence layer 330 to form excitons, the excitons transfer energy to the host material, and the host material transfers energy to the doping material, thus enabling the doping material to emit light.
The host material of the organic luminescence layer 330 can be a metal chelate compound, a bis-styryl derivative, an aromatic amine derivative, a dibenzofuran derivative or other types of materials, which is not specially limited in the present disclosure. In one embodiment of the present disclosure, the host material of the organic luminescence layer 330 is BH-01 or α,β-AND.
The doping material of the organic luminescence layer 330 may be a compound having a condensed aryl ring or its derivative, a compound having a heteroaryl ring or its derivative, an aromatic amine derivative, or other materials, which is not particularly limited in the present disclosure. In one embodiment of the present disclosure, the doping material of the organic luminescence layer 330 is BD-01.
The electron transport layer 340 may be of a single-layer structure or a multi-layer structure, and may include one or more electron transport materials, and the electron transport materials may be selected from, but are not limited to, a benzimidazole derivative, an oxadiazole derivative, a quinoxaline derivative, or other electron transport materials. In one embodiment of the present disclosure, the electron transport layer material contains the organic compound of the present disclosure.
In the present disclosure, the cathode 200 may include a cathode material, which is a material having a small work function that facilitates electron injection into the functional layer. Specific examples of the cathode material include, but are not limited to, metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead or their alloys; or multilayer materials such as LiF/Al, Liq/Al, LiO2/Al, LiF/Ca, LiF/Al, and BaF2/Ca. A metal electrode containing magnesium and silver as the cathode is preferably included.
Optionally, as shown in FIG. 1 , a hole injection layer 310 may also be arranged between the anode 100 and the hole transport layer 320 to enhance the ability to inject holes into the hole transport layer 320. The hole injection layer 310 can be made of a benzidine derivative, a starburst arylamine compound, a phthalocyanine derivative or other materials, which is not specially limited in the present disclosure. For example, the hole injection layer 310 is composed of F4-TCNQ or m-MTDATA.
Optionally, as shown in FIG. 1 , an electron injection layer 350 can also be arranged between the cathode 200 and the electron transport layer 340 so as to enhance the ability to inject electrons into the electron transport layer 340. The electron injection layer 350 may include an inorganic material such as an alkali metal sulfide, and an alkali metal halide, or may include a complex of an alkali metal and an organic substance. For example, the electron injection layer 350 may include Yb.
According to another embodiment, the electronic element may be a photoelectric conversion device. The photoelectric conversion device may include an anode and a cathode which are disposed oppositely, and a functional layer disposed between the anode and the cathode; and the functional layer includes the nitrogen-containing compound provided by the present disclosure.
According to one specific embodiment, as shown in FIG. 2 , a photoelectric conversion device may include an anode 100, a hole transport layer 320, a photoelectric conversion layer 360, an electron transport layer 340, and a cathode 200 which are sequentially stacked. The hole transport layer 320, the photoelectric conversion layer 360, and the electron transport layer 340 constitute the functional layer 300.
Optionally, the photoelectric conversion device can be a solar cell, in particular an organic thin-film solar cell. For example, in one embodiment of the present disclosure, the solar cell may include an anode, a hole transport layer, an organic luminescence layer, an electron transport layer and a cathode which are sequentially stacked, and the electron transport layer includes the organic compound of the present disclosure.
In a third aspect, the present disclosure provides an electronic device, including the electronic element according to the second aspect of the present disclosure.
According to one embodiment, as shown in FIG. 3 , the electronic device is a first electronic device 400 including the organic electroluminescent device described above. The first electronic device 400 may, for example, be a display device, a lighting device, an optical communication device, or other types of electronic devices, and may include, for example, but is not limited to, a computer screen, a mobile phone screen, a television, electronic paper, an emergency lighting lamp, an optical module, and the like.
According to another embodiment, as shown in FIG. 4 , the electronic device is a second electronic device 500 including the photoelectric conversion device described above. The second electronic device 500 may, for example, be a solar power plant, a light detector, a fingerprint recognition device, an optical module, a CCD camera, or other types of electronic devices.
The synthesis methods of the nitrogen-containing compounds of the present disclosure are specifically illustrated below in conjunction with synthesis examples, but the present disclosure is not limited in any way.
Specific organic electroluminescent device preparation examples are given below.
An anode was prepared by the following process: an ITO substrate having a thickness of 1500 Å was cut into a dimension of 40 mm×40 mm×0.7 mm to be prepared into a top-emitting experimental substrate with a cathode overlap region, an anode and an insulating layer pattern by adopting a photoetching process, and surface treatment was performed by utilizing ultraviolet ozone and O2:N2 plasma so as to increase the work function of the anode (the experimental substrate) and clean the experimental substrate.
m-MTDATA (4,4′,4″-tris(N-3-methylphenyl-N-phenylamino)triphenylamine) was vacuum-evaporated on the experimental substrate (the anode) to form a hole injection layer (HIL) having a thickness of 120 Å, and NPB was vacuum-evaporated on the hole injection layer to form a hole transport layer (HTL) having a thickness of 1030 Å.
TCTA was evaporated on the hole transport layer to form an electron blocking layer (EBL) having a thickness of 100 Å.
α,β-ADN was used as a host while BD-1 was doped, and the host and the dopant form an organic luminescence layer (EML) having a thickness of 220 Å at a film thickness ratio of 30:3.
A compound 1 of the present disclosure was evaporated on the luminescence layer to form an electron transport layer (ETL) having a thickness of 300 Å, Yb was evaporated on the electron transport layer to form an electron injection layer (EIL) having a thickness of 10 Å, and then magnesium (Mg) and silver (Ag) were mixed and vacuum-evaporated on the electron injection layer at an evaporation rate of 1:10 to form a cathode having a thickness of 120 Å.
In addition, CP-1 having a thickness of 700 Å was evaporated on the cathode to form a capping layer (CPL), thus completing the manufacture of an organic luminescence device.
The structural formulas of m-MTDATA, NPB, TCTA, α,β-ADN, BD-1 and CP-1 are as follows:
An organic electroluminescent device was manufactured by the same method as that in Example 1 except that compounds shown in Table 5 were respectively used when the electron transport layer (ETL) was formed.
In Comparative examples 1 to 6, an organic electroluminescent device was manufactured by the same method as that in Example 1, except that compounds A, B, C, E, F and G were used as the electron transport layer instead of the compound 1.
The IVL data compares the test results at 10 mA/cm2, and the service life is a test result at a current density of 20 mA/cm2.
TABLE 5 |
Performance of devices in Examples 1 to 31 and Comparative examples 1 to 6 |
External | T95 | |||||
Operating | quantum | device | ||||
voltage | Luminous | efficiency | service | Chromaticity | ||
volt | efficiency | EQE | life | coordinate | ||
Example | Compound | (V) | (Cd/A) | (%) | (h) | CIEy |
Example 1 | Compound | 3.86 | 6.4 | 13.5 | 161 | 0.049 |
3 | ||||||
Example 2 | Compound | 3.80 | 6.4 | 13.6 | 168 | 0.048 |
14 | ||||||
Example 3 | Compound | 3.85 | 6.7 | 14.5 | 172 | 0.049 |
46 | ||||||
Example 4 | Compound | 3.84 | 6.9 | 14.9 | 183 | 0.049 |
63 | ||||||
Example 5 | Compound | 3.89 | 6.7 | 14.5 | 177 | 0.048 |
30 | ||||||
Example 6 | Compound | 3.78 | 6.7 | 14.5 | 175 | 0.048 |
73 | ||||||
Example 7 | Compound | 3.87 | 6.3 | 12.9 | 150 | 0.050 |
81 | ||||||
Example 8 | Compound | 3.86 | 6.9 | 14.9 | 173 | 0.049 |
82 | ||||||
Example 9 | Compound | 3.82 | 6.6 | 14.2 | 169 | 0.049 |
111 | ||||||
Example 10 | Compound | 3.86 | 7.0 | 15.4 | 175 | 0.048 |
113 | ||||||
Example 11 | Compound | 3.86 | 6.3 | 12.9 | 149 | 0.049 |
216 | ||||||
Example 12 | Compound | 3.87 | 7.1 | 15.5 | 184 | 0.049 |
483 | ||||||
Example 13 | Compound | 3.90 | 6.3 | 12.9 | 169 | 0.048 |
181 | ||||||
Example 14 | Compound | 3.86 | 6.9 | 14.9 | 174 | 0.049 |
482 | ||||||
Example 15 | Compound | 3.89 | 6.8 | 14.7 | 148 | 0.049 |
518 | ||||||
Example 16 | Compound | 3.81 | 6.6 | 14.2 | 173 | 0.048 |
268 | ||||||
Example 17 | Compound | 3.83 | 6.5 | 14.0 | 169 | 0.048 |
348 | ||||||
Example 18 | Compound | 3.84 | 6.6 | 12.9 | 161 | 0.049 |
328 | ||||||
Example 19 | Compound | 3.81 | 6.3 | 12.9 | 169 | 0.049 |
318 | ||||||
Example 20 | Compound | 3.86 | 6.5 | 14.0 | 182 | 0.049 |
412 | ||||||
Example 21 | Compound | 3.89 | 7.1 | 15.5 | 171 | 0.048 |
533 | ||||||
Example 22 | Compound | 3.83 | 6.3 | 12.9 | 151 | 0.048 |
555 | ||||||
Example 23 | Compound | 3.87 | 6.9 | 14.9 | 176 | 0.049 |
525 | ||||||
Example 24 | Compound | 3.78 | 6.3 | 12.9 | 153 | 0.049 |
570 | ||||||
Example 25 | Compound | 3.84 | 6.4 | 12.9 | 149 | 0.050 |
577 | ||||||
Example 26 | Compound | 3.86 | 6.8 | 14.7 | 175 | 0.048 |
584 | ||||||
Example 27 | Compound | 3.82 | 6.5 | 14.0 | 174 | 0.049 |
589 | ||||||
Example 28 | Compound | 3.87 | 6.7 | 14.5 | 169 | 0.049 |
591 | ||||||
Example 29 | Compound | 3.86 | 6.9 | 14.9 | 170 | 0.049 |
590 | ||||||
Example 30 | Compound | 3.87 | 6.3 | 12.9 | 155 | 0.048 |
598 | ||||||
Example 31 | Compound | 3.84 | 6.2 | 12.8 | 145 | 0.049 |
619 | ||||||
Comparative | Compound | 4.19 | 5.0 | 10.8 | 125 | 0.048 |
example 1 | A | |||||
Comparative | Compound | 4.14 | 4.0 | 8.9 | 97 | 0.049 |
example 2 | B | |||||
Comparative | Compound | 4.09 | 5.5 | 10.8 | 109 | 0.048 |
example 3 | C | |||||
Comparative | Compound | 4.11 | 5.3 | 10.5 | 109 | 0.048 |
example 4 | E | |||||
Comparative | Compound | 4.13 | 5.0 | 9.2 | 100 | 0.049 |
example 5 | F | |||||
Comparative | Compound | 4.14 | 5.4 | 10.9 | 107 | 0.049 |
example 6 | G | |||||
From the results of Table 5 above, it can be seen that by comparing Examples 1 to 31 using the compounds of the present disclosure with Comparative examples 1 to 6 using the well-known compounds A, B, C, E, F and G, for the organic electroluminescent devices in Examples 1 to 31, the driving voltage is reduced by about 0.2 V, the luminous efficiency (Cd/A) is improved by at least 12.7%, and the service life of the device is improved by at least about 16%.
In summary, the organic electroluminescent device prepared by using the compound of the present disclosure in the electron transport layer (ETL) can achieve higher luminous efficiency, and the service life of the device can be significantly improved. The adamantyl and the cyano group are connected to the nitrogen-containing heteroaryl core structure via the linking group in the nitrogen-containing compound structure of the present disclosure, highly polar cyano makes this part of the structure have a large dipole moment, thus the polarity of the compound is increased, and the organic materials with a high electron mobility are obtained, and when the compound is used as the electron transport layer of the electronic element, the efficiency, and service life of the device can be improved, and the operating voltage can be reduced. As a rigid and bulky polycyclic alkane structure, 1-adamantyl itself can avoid the stacking of conjugated planes to form π aggregation, so that the film-forming properties of the material can be improved, the molecular weight and asymmetry are simultaneously enhanced at the same time, the thermal stability of the molecule is improved, the crystallinity of the material is also improved to a certain extent. Therefore, the stability of the compound can be improved when applied to the organic electroluminescent device, resulting in increased the service life of the device, and easier to be mass-production. From the test data of Examples 1 to 31 and Comparative example 4, it can be seen that 1-adamantyl connected at the end of the compound is superior to 2-adamantyl in increasing the polarity and thermal stability of the compound.
Thermal Stability Test of Compounds
When the compounds were used in mass production of devices, the compounds needed to be heated under evaporation conditions for a long period of time. If the thermal stability of the molecular structures of the compounds was poor under heated conditions, the purity of the compounds decreased under heated conditions over a long period of time, resulting in large differences in the performance of devices prepared early, middle and late stages of mass production.
In the present disclosure, the stability of the molecular structures of the compounds of the present disclosure under heated conditions over a long period of time during evaporation in mass production was evaluated by the following method:
Heat resistance tests (heat preservation treatments) were carried out on the compounds of the present disclosure and comparative compounds D, E, A and G, respectively, in a high vacuum environment (<10−6 Pa) at a temperature corresponding to an evaporation rate of 5 Å/s for 200 h. The stability of the compounds of the present disclosure under the mass production condition was determined by a purity drop value before and after the heat resistance test, purity drop value (%)=purity before heat treatment (%)−purity after heat treatment (%).
Comparative Compounds D and G:
TABLE 6 |
Test temperature and purity drop values for |
nitrogen-containing compounds |
Evaporation | Purity | ||
Test example | temperature | drop value | |
No. | Compound | at 5 Å/s (° C.) | (HPLC, %) |
Test example | Compound | 205 | 0.06 |
1 | 3 | ||
Test example | Compound | 208 | 0.13 |
2 | 14 | ||
Test example | Compound | 210 | 0.13 |
3 | 46 | ||
Test example | Compound | 212 | 0.14 |
4 | 63 | ||
Test example | Compound | 205 | 0.17 |
5 | 30 | ||
Test Example | Compound | 219 | 0.23 |
6 | 73 | ||
Test example | Compound | 217 | 0.15 |
7 | 81 | ||
Test example | Compound | 213 | 0.27 |
8 | 82 | ||
Test example | Compound | 221 | 0.25 |
9 | 111 | ||
Test example | Compound | 219 | 0.37 |
10 | 113 | ||
Test example | Compound | 230 | 0.19 |
11 | 216 | ||
Test example | Compound | 212 | 0.26 |
12 | 483 | ||
Test example | Compound | 216 | 0.13 |
13 | 181 | ||
Test example | Compound | 208 | 0.27 |
14 | 482 | ||
Test example | Compound | 208 | 0.25 |
15 | 518 | ||
Test example | Compound | 229 | 0.17 |
16 | 268 | ||
Test example | Compound | 223 | 0.14 |
17 | 348 | ||
Test example | Compound | 235 | 0.37 |
18 | 328 | ||
Test example | Compound | 236 | 0.35 |
19 | 318 | ||
Test example | Compound | 209 | 0.03 |
20 | 412 | ||
Test example | Compound | 218 | 0.11 |
21 | 533 | ||
Test example | Compound | 206 | 0.11 |
22 | 55 | ||
Test example | Compound | 219 | 0.25 |
23 | 525 | ||
Test example | Compound | 234 | 0.36 |
24 | 570 | ||
Test example | Compound | 232 | 0.28 |
25 | 577 | ||
Test example | Compound | 222 | 0.38 |
26 | 584 | ||
Test example | Compound | 221 | 0.23 |
27 | 589 | ||
Test example | Compound | 225 | 0.25 |
28 | 591 | ||
Test example | Compound | 227 | 0.28 |
29 | 590 | ||
Test example | Compound | 223 | 0.21 |
30 | 598 | ||
Test example | Compound | 230 | 0.32 |
31 | 619 | ||
Test example | Compound D | 268 | 2.4 |
32 | |||
Test example | Compound E | 262 | 2.7 |
33 | |||
Test example | Compound A | 258 | 2.1 |
34 | |||
Test example | Compound G | 228 | 2.1 |
35 | |||
It can be seen from Table 6 that the purity drop values of the nitrogen-containing compounds of the present disclosure after heating are all less than 0.4%, with most of them being less than 0.3%. When the purity drop value of the compound is more than 1%, the efficiency and service life of the device will be significantly reduced; and thermally unstable compounds can lead to large differences in the performance of devices prepared early, middle and late stages of mass production in actual production. The heat resistance tests of the compounds in the present disclosure demonstrated that purity drop values of the compounds are all less than 0.4%, and the purity drop values of the comparative compounds D, E, A, and G are all more than 2% at the evaporation temperature, exceeding the limit of 1%, and thus the nitrogen-containing compounds of the present disclosure also have excellent mass production thermal stability compared with the comparative compounds.
Those skilled in the art will easily think of other embodiments of the present disclosure after considering the description and practicing the present disclosure disclosed here. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure, and these variations, uses or adaptations follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the art not disclosed by the present disclosure. The description and the embodiments are only considered as exemplary, and the true scope and spirit of the present disclosure are indicated by the appended claims.
Claims (10)
1. A nitrogen-containing compound, having a structure as shown in a formula 1:
wherein X1, X2, and X3 are the same or different, and are each independently selected from C(R0) or N, and at least two of X1, X2, and X3 are N;
Y1 is
Y2 is
and Y3 is
L1, L2, and L3 are the same as or different from each other, and are each independently selected from a single bond, substituted or unsubstituted phenylene, substituted or unsubstituted biphenylene, substituted or unsubstituted naphthylene, substituted or unsubstituted carbazolylene, substituted or unsubstituted anthrylene, or is a group formed by connecting two or three of the above subunit groups by a single bond;
and substituents in the L1, the L2, and the L3 are the same as or different from each other, and are each independently selected from the group consisting of deuterium, fluorine, chlorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl and phenyl;
Ar1, Ar2, and Ar3 are the same as or different from each other, and are each independently selected from a substituted or unsubstituted group V, and the unsubstituted group V is selected from the group consisting of:
the substituted group V has one or two or more substituents, and the substituents are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl, phenyl, or naphthyl;
Ad is
m1 to m3 is represented by mi, n1 to n3 is represented by ni, q1 to q3 is represented by qi, and t1 to t3 is represented by ti; and i is a variable, and is selected from 1, 2 or 3;
mi represents the number of cyano on Li, ni represents the number of Ad on Li, qi represents the number of cyano on Ari, and ti represents the number of Ad on Ari;
mi is independently selected from 0, 1, or 2, and when mi is greater than 1, any two mi are the same or different;
ni is independently selected from 0 or 1, and when ni is greater than 1, any two ni are the same or different;
qi is independently selected from 0, 1, or 2, and when qi is greater than 1, any two qi are the same or different;
ti is independently selected from 0 or 1, and when ti is greater than 1, any two ti are the same or different;
m1+m2+m3+q1+q2+q3≥1, and n1+n2+n3+t1+t2+t3≥1;
each R0 is the same as or different from each other, and is independently selected from hydrogen, and
the nitrogen-containing compound does not comprise the following compounds:
2. The nitrogen-containing compound according to claim 1 , wherein m1+m2+m3+q1+q2+q3 is 1 or 2, and n1+n2+n3+t1+t2+t3 is 1 or 2.
4. The nitrogen-containing compound according to claim 1 , wherein the L1, the L2, and the L3 are the same or different, and are each independently selected from a single bond, and a substituted or unsubstituted group W, wherein the unsubstituted group W is selected from the group consisting of:
and
when the group W is substituted with one or more substituents, the substituents in the group W are each independently selected from the group consisting of deuterium, fluorine, chlorine, cyano, methyl, ethyl, isopropyl, n-propyl, tert-butyl and phenyl; and when the number of the substituents in the group W is more than 1, the substituents are the same or different.
8. An electronic element, comprising an anode and a cathode which are oppositely disposed, and a functional layer disposed between the anode and the cathode; wherein
the functional layer comprises an electron transport layer, and the electron transport layer comprises the nitrogen-containing compound according to claim 1 .
9. The electronic element according to claim 8 , wherein the electronic element is an organic electroluminescent device or a photoelectric conversion device.
10. An electronic device, comprising the electronic element according to claim 8 .
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